Damage Specification Standards 2026

DSS-M
Mechanical Abrasion/Scoring/Impact/Cracking

Draft v1.0

DSS-M Page Overview

DSS-M identifies mechanical forms of glass surface damage, including linear scoring, abrasion fields, edge and corner damage, impact/contact marks, fabrication debris scratches, drilling/notching damage, and mechanically initiated cracking. These entries help distinguish repairable worked-surface damage from coatings, residues, chemical attack, manufacturing features, internal assembly conditions, thermal damage, or unknown/mixed mechanisms.

Use this page with GlassRenu VIS-A / VIS-DA and the applicable project specifications. DSS-M is intended to support consistent classification, documentation, and restoration-scope decisions before work begins, especially where surface-catch response, chip-flank morphology, edge access, and fracture origin affect whether a condition is repairable or out of in-place scope.

Table of Contents

Page Resources

M.01 Linear Scoring / Tracks

M.02 Abrasion Fields (Non‑linear)

M.03 Edge & Corner Damage

M.04 Impact & Contact

M.05 Fabrication Debris (FD) Scratches

M.06 Drilling/Notching‑Related

M.07 Cracking & Fracture (mechanically initiated)

References & Citations

View DSS-M Reference Summary

The following references support the mechanical-damage context used throughout DSS-M. Individual DSS entries include their own collapsed reference footers with the most relevant sources and internal cross-links.

M.01

Linear Scoring / Tracks

DSS-M.01.01

Scraper/Razor Scoring

DSS-M.01.01
Scraper/Razor Scoring
Mechanical scoring on the worked surface — appearance-based classification; acceptance per VIS §6

Definition (Reference)

Linear score(s) produced by blades/scrapers/razors or sharp edges contacting the glass face, typically presenting bright “chip flanks”/micro-chipping along the line in raking light. Distinct from coating anomalies (area sheen/colour change) and from non-directional residue films. Terminology for micro-chipping and chip flank follows VIS §3; classification is appearance-based using surface-catch and morphology under VIS viewing conditions.

Typical Presentation (Informative)

  • One or more straight or gently arced lines; often directional with sparkling edges in raking light due to chip flanks.
  • Persists after Non-Invasive Reveal (clean & dry); unlike residue, the cue does not wipe off.
  • Can occur as single tracks, clustered short scores, or parallel passes (e.g., blade at a guide).

Field Identification Cues (Normative)

  • Surface-catch class (MSRT)
  • SC-2 (clear) is common for true blade scores; shallow grazes may read SC-1 (slight). Perform one light, non-marring pass only; MSRT supports classification, not acceptance.
  • Reveal / lighting / geometry
  • Complete Non-Invasive Reveal (distilled/neutral-pH water, lint-free microfiber; no blades/abrasives/chemicals before evaluation). Inspect at 12 / 36 / 72 in, normal incidence + oblique sweep (~60°–120°) under raking light.
  • Location / access
  • Confirm the cue is on the exposed face (not between panes). If any doubt, use parallax (between-pane features show fixed parallax) and record surface numbering #1–#4.

Classification Mapping (to VIS-DA) (Normative)

  • CAT-2 — Light: Narrow, fine-edged lines with SC-1, no pronounced chip flanks; limited impact at standard view.
  • CAT-3 — Moderate: SC-2 with minor chip flanks; line(s) noticeable at standard distance.
  • CAT-4 — Severe: SC-2 (clear-to-strong); rough chip flanks, possible pits/craters; distinctly visible at standard and wide-field views.
  • (Use VIS visibility convention and MSRT outcome; “linear directionality with chip flanks suggests mechanical history.”)

Indicative Relief / Depth (Informative)

  • CAT-2: ~0.2–1 μm typical surface incision (clean edges; no pronounced flanks).
  • CAT-3: ~1–5 μm with incipient micro-chipping along flanks.
  • CAT-4: ≥5 μm with rough chip-flank breakout; local pits/craters may be present.
  • (Depths are illustrative for cueing only; VIS classification/acceptance remains appearance-based.)

Differentiation & False Positives (Informative)

  • vs. Coating anomalies (Co-family): Coating rub/patch/colour shift is area-based, SC-0/SC-1, and lacks chip flanks; worked-surface coating anomalies are not permitted at acceptance.
  • vs. Residue films/overspray (R-family): Residues change with reveal; a true score persists.
  • vs. Glass-on-glass tracks (M.01.03): Tracks often appear as paired arcs/lines with alternating intensity; confirm chip flanks for scraper scoring.
  • vs. Between-pane features (A-family): Internal cues show fixed parallax → CAT-5 by location.

Evidence Package (Documentation Requirements) (Normative)

  1. Photo set (VIS): 12 / 36 / 72 in, normal + oblique, include raking; add macro frames of the line showing chip flanks without a worked transition edge. Note reveal status and lighting/time.
  2. MSRT result: Record SC class (often SC-2); one pass, non-marring.
  3. Forms: Pane ID; surface numbering; worked surface Y/N; geometry checklist; photos attached (per VIS Appendix X3 fields).

Mis-ID Pitfalls (Informative)

  • Attempting to “feather” a score during inspection can create a worked region/transition edge, which VIS disallows at acceptance for CAT-0…CAT-4. Keep evaluation non-marring and appearance-only.

Reporting Language (Template)

  • M.01.01 Scraper/Razor Scoring — Linear line(s) at #__ with chip-flank sparkle in raking; MSRT = SC-2 (clear). Persists after Non-Invasive Reveal. Classified CAT-2/3/4 by visibility and flank severity per VIS. Photo set at 12/36/72 in (normal + oblique + raking); surface numbering and form fields recorded. Acceptance per VIS §6 (appearance-based).
References & Related Links

Informative references and related internal links for context only. Product acceptance remains governed by the applicable project specifications, referenced product standards, and GlassRenu VIS/DSS procedures.

DSS-M.01.02

Straightedge / Metal-Guide Scoring

DSS-M.01.02
Straightedge / Metal-Guide Scoring
Mechanical scoring on the worked surface — appearance-based classification; acceptance per VIS §6

Definition (Reference)

Long, ruler-straight linear score(s) produced when a scraper/razor or other hard edge rides along a metal straightedge/guide on the glass face. Typically presents bright “chip flanks” / micro-chipping along the line in raking light; persists after reveal and does not behave like a residue film. Terminology for micro-chipping and chip flank per VIS §3; classification is appearance-based using surface-catch and morphology under VIS viewing conditions.

Typical Presentation (Informative)

  • Ruler-straight tracks across part or all of the lite; often parallel multiples (repeat passes along the guide).
  • Sparkling flanks in raking light from edge breakout; consistent line width/depth compared to hand-free scratches.
  • Persists after Non-Invasive Reveal (clean & dry); does not wipe off.

Field Identification Cues (Normative)

  • Surface-catch class (MSRT):
  • Commonly SC-2 (clear) for true guide-assisted scores; shallow grazes may read SC-1 (slight). One light, non-marring pass only; MSRT supports classification, not acceptance.
  • Reveal / lighting / geometry:
  • Complete Non-Invasive Reveal (distilled/neutral-pH water; lint-free microfiber; no blades/abrasives/chemicals prior to evaluation). Inspect at 12 / 36 / 72 in, normal incidence + oblique sweep (~60°–120°) with raking light, per VIS.
  • Location / access:
  • Confirm the cue is on the exposed face (not between panes). If any doubt, use parallax (between-pane features show fixed parallax) and record surface numbering #1–#4 on Forms:

Classification Mapping (to VIS-DA) (Normative)

  • Assign CAT by visibility convention and MSRT outcome under VIS inspection—use chip-flank severity to distinguish depth bands:
  • CAT-2 — Light: Narrow, clean-edged line(s) with SC-1, no pronounced chip flanks; limited impact at standard view.
  • CAT-3 — Moderate: SC-2 with minor chip flanks; noticeable at standard distance.
  • CAT-4 — Severe: SC-2 (clear-to-strong) with rough chip flanks, possible pits/craters; distinctly visible at standard and wide-field views.
  • (Use the VIS three-part cueing: surface catch + edge/surface morphology + location/access.

Indicative Relief / Depth (Informative)

  • CAT-2: ~0.2–1 μm typical surface incision (clean edges; minimal flank breakout).
  • CAT-3: ~1–5 μm with incipient micro-chipping along flanks.
  • CAT-4: ≥5 μm with rough chip-flank breakout; local pits/craters may be present.
  • (Depths are illustrative for cueing only; VIS classification/acceptance remains appearance-based.)

Differentiation & False Positives (Informative)

  • vs. Scraper/Razor scoring (M.01.01): Hand-free scores often show arcs/variable directionality; guide scores are ruler-straight with consistent depth and may have parallel repeats.
  • vs. Glass-on-glass tracks (M.01.03): Tracks commonly present paired arcs/lines with travel-path periodicity; guide scores are single or parallel straight runs.
  • vs. Coating anomalies (Co-family): Coating rub/patch/colour shifts are area-based, generally SC-0/SC-1, and lack chip flanks; coating anomalies on worked faces are not permitted at acceptance.
  • vs. Between-pane cues (A-family): Internal features show fixed parallax → CAT-5 by location.

Evidence Package (Documentation Requirements) (Normative)

  1. Photo set (VIS): 12 / 36 / 72 in, normal + oblique, include raking; add macro frames of the line showing chip flanks (no worked transition edge). Consider one context photo showing ruler-straight alignment (include a straightedge in frame when appropriate). Note reveal status and lighting/time.
  2. MSRT result: Record SC class (often SC-2); one pass, non-marring.
  3. Forms: Pane ID; surface numbering; worked surface Y/N; geometry checklist; photos attached (per VIS Appendix X3 fields).

Mis-ID Pitfalls (Informative)

  • Attempting to “feather” a straightedge score during inspection can create a worked region/transition edge, which VIS disallows at acceptance for CAT-0…CAT-4. Keep evaluation non-marring and appearance-only.

Reporting Language (Template)

  • M.01.02 Straightedge/Metal-Guide Scoring — Ruler-straight linear line(s) at #__ with chip-flank sparkle in raking; MSRT = SC-1/SC-2. Persists after Non-Invasive Reveal. Classified CAT-2/3/4 by visibility and flank severity per VIS. Photo set at 12/36/72 in (normal + oblique + raking); surface numbering and form fields recorded. Acceptance per VIS §6 (appearance-based).
References & Related Links

Informative references and related internal links for context only. Product acceptance remains governed by the applicable project specifications, referenced product standards, and GlassRenu VIS/DSS procedures.

DSS-M.01.03

Glass-on-Glass Track (paired arcs/lines)

DSS-M.01.03
Glass-on-Glass Track (paired arcs/lines)
Mechanical tracking on the worked surface — appearance-based classification; acceptance per VIS §6

Definition (Reference)

Paired, often parallel arcs or lines produced when a glass lite contacts/moves against another glass surface or a similarly hard, smooth element (e.g., stacked lite, cart rail with glass contact). Presents as directional linear paths; depth may range from faint polish disturbance to tactile scoring with micro-chipping (“chip flanks”) visible in raking light. Terminology for micro-chipping/chip flank and evaluation by surface-catch (MSRT) follow VIS §3 and §5.5; classification uses appearance cues under VIS viewing/lighting.

Typical Presentation (Informative)

  • Two closely spaced, partially concentric arcs or paired lines that correlate with a sweep/pivot path of contact; may show periodic intensity along travel.
  • Directionality is evident at inspection geometry; strongest in raking light/oblique sweep; persists after Non-Invasive Reveal (clean & dry).

Field Identification Cues (Normative)

  • Surface-catch class (MSRT):
  • SC-1 (slight) for shallow track polish/lineation; SC-2 (clear) where chip flanks/micro-chipping occur. Perform one light, non-marring pass only; MSRT supports classification, not acceptance.
  • Reveal / lighting / geometry:
  • Complete Non-Invasive Reveal (distilled/neutral-pH water; lint-free microfiber; no blades/chemicals) before evaluation. Inspect at 12 / 36 / 72 in, normal incidence + oblique sweep (~60°–120°) with raking light, per VIS.
  • Location / access:
  • Confirm the cue is on the exposed face (not between panes). Use fixed parallax to identify between-pane look-alikes; record surface numbering (#1–#4 / laminate-internal) on Forms:

Classification Mapping (to VIS-DA) (Normative)

  • Assign CAT by visibility convention and MSRT with the three-part cueing (surface catch + morphology + location):
  • CAT-2 — Light: Narrow, clean lines/paired arcs with SC-1, no pronounced chip flanks; limited impact at standard view.
  • CAT-3 — Moderate: SC-2 with minor chip flanks; track(s) noticeable at standard distance.
  • CAT-4 — Severe: SC-2 (clear-to-strong) with rough chip flanks, local pits/craters; distinctly visible at standard and wide-field views.
  • (Classification is appearance-based; acceptance is handled separately in VIS §6.)

Indicative Relief / Depth (Informative)

  • CAT-2: ~0.2–1 μm (fine lineation; minimal edge breakout).
  • CAT-3: ~1–5 μm with incipient micro-chipping along flanks.
  • CAT-4: ≥5 μm with rough chip-flank breakout, occasional pit/crater.
  • (Depths are illustrative for cueing only; VIS classification/acceptance remains appearance-based.)

Differentiation & False Positives (Informative)

  • vs. Scraper/Razor scoring (M.01.01): Scraper lines are often single, ruler-straight or hand-guided; glass-on-glass tracks typically occur as paired arcs/lines following a sweep path. (Confirm chip flanks for depth.)
  • vs. Straightedge/guide scoring (M.01.02): Guide scores are ruler-straight with consistent depth; tracks usually show arc geometry and periodic intensity along travel.
  • vs. Residue films/overspray (R-family): Residues change with Non-Invasive Reveal; true tracks persist.
  • vs. Between-pane cues (A-family): Internal features show fixed parallax → CAT-5 by location (out of in-place scope).

Evidence Package (Documentation Requirements) (Normative)

  1. Photo set (VIS): 12 / 36 / 72 in, normal + oblique, include raking; add macro frames of the paired lines showing edge morphology (chip flanks if present) and no worked transition edge. Record reveal status, lighting, and time.
  2. MSRT result: Record SC class (SC-1 / SC-2 as observed); one pass, non-marring.
  3. Forms: Pane ID; surface numbering (#1–#4 / laminate-internal); worked surface Y/N; geometry checklist; photos attached (per VIS Appendix X3 fields).

Mis-ID Pitfalls (Informative)

  • Attempting to “feather” a track during inspection can create a worked region/transition edge, which VIS disallows at acceptance for CAT-0…CAT-4. Keep evaluation non-marring and appearance-only.

Reporting Language (Template)

  • M.01.03 Glass-on-Glass Track (paired arcs/lines) — Paired arc/line track at #__ confirmed after Non-Invasive Reveal; MSRT = SC-1/SC-2; chip flanks present/absent (record). Classified CAT-2/3/4 by visibility and flank severity per VIS. Photo set at 12/36/72 in (normal + oblique + raking); surface numbering recorded. Acceptance per VIS §6 (appearance-based).
References & Related Links

Informative references and related internal links for context only. Product acceptance remains governed by the applicable project specifications, referenced product standards, and GlassRenu VIS/DSS procedures.

DSS-M.01.04

Conveyor/Belt Line Scoring (handling line)

DSS-M.01.04
Conveyor/Belt Line Scoring (handling line)
Mechanical scoring on the worked surface — appearance-based classification; acceptance per VIS §6

Definition (Reference)

Long, transport-direction linear lines/bands produced when a lite slides or oscillates on a conveyor/belt/handling rail during fabrication, glazing, or site handling. Presents as directional linear scoring that is often bay-to-bay continuous, sometimes in parallel sets at consistent spacing; in raking light, edges can show bright “chip-flanks”/micro-chipping when depth increases. Terminology for micro-chipping / chip flank and use of surface-catch (MSRT) and VIS viewing conditions follow the VIS (classification is appearance-based).

Typical Presentation (Informative)

  • Long, straight to gently meandering linear bands that may run the width or length of the lite; often multiple parallels that align with conveyor/rail contact zones.
  • Consistency across adjacent lites (same elevation/line) is common.
  • Persists after Non-Invasive Reveal (clean & dry); unlike residue, does not wipe off. Inspect at VIS geometry (12 / 36 / 72 in; normal + oblique; raking).

Field Identification Cues (Normative)

  • Surface-catch class (MSRT):
  • SC-1 (slight) for shallow transport marks; SC-2 (clear) when scoring with chip-flanks is present. MSRT = one light, non-marring pass to support classification (not acceptance).
  • Reveal / lighting / geometry:
  • Complete Non-Invasive Reveal; then evaluate at 12 / 36 / 72 in with normal incidence + oblique sweep (~60°–120°) under raking light, per VIS. Record distances/angles in the photo frames.
  • Location / access:
  • Confirm the cue is on the exposed face (not between panes). Use parallax when IGUs are present (between-pane features show fixed parallax) and record surface numbering #1–#4 / laminate-internal on Forms: If between panes/inaccessible → CAT-5 by location.

Classification Mapping (to VIS-DA) (Normative)

  • Assign CAT by visibility convention + MSRT and edge/morphology (three-part cueing in VIS):
  • CAT-2 — Light: Fine, clean-edged lines with SC-1; no pronounced chip-flanks; limited impact at standard view.
  • CAT-3 — Moderate: SC-2 with minor chip-flanks; noticeable at standard distance.
  • CAT-4 — Severe: SC-2 (clear-to-strong) with rough chip-flanks, occasional pits/craters; distinctly visible at standard and wide-field views.
  • (Classification is appearance-based; acceptance governed separately by VIS §6.)

Indicative Relief / Depth (Informative)

  • CAT-2: ~0.2–1 μm (fine transport lineation; minimal flank breakout).
  • CAT-3: ~1–5 μm (incipient micro-chipping along flanks).
  • CAT-4: ≥5 μm (rough chip-flank breakout; local pits/craters possible).
  • (Depths are illustrative for cueing only; VIS classification/acceptance remains appearance-based.)

Differentiation & False Positives (Informative)

  • vs. Straightedge/metal-guide scoring (M.01.02): Guide scoring is ruler-straight with consistent depth; conveyor lines may wander slightly and often appear as multiple bands at handling-zone spacing.
  • vs. Glass-on-glass tracks (M.01.03): Tracks are frequently paired arcs/lines reflecting sweep/pivot; conveyor lines are transport-direction runs and may repeat across lites.
  • vs. Residue films/overspray (R-family): Residues change with Non-Invasive Reveal; scoring persists. (Apply VIS reveal + geometry.)

Evidence Package (Documentation Requirements) (Normative)

  1. Photo set (VIS): 12 / 36 / 72 in, normal + oblique, include raking. Capture at least one context frame showing band continuity and any parallel sets; include a straight reference where practical. Record distance/angle in-frame.
  2. MSRT result: Record SC class (SC-1 or SC-2 as observed); one pass, non-marring.
  3. Forms: Pane ID; surface numbering (#1–#4 / laminate-internal); worked surface Y/N; geometry checklist; reveal status; lighting/time; attach photos—per VIS Appendix X3.

Mis-ID Pitfalls (Informative)

  • Attempting to “feather” or “blend” a transport line during inspection can create a worked region/transition edge, which VIS disallows at acceptance for CAT-0…CAT-4. Keep evaluation non-marring and appearance-only.

Reporting Language (Template)

  • M.01.04 Conveyor/Belt Line Scoring (handling line) — Long transport-direction line(s)/band(s) at #__ confirmed after Non-Invasive Reveal; MSRT = SC-1/SC-2 with/without chip-flanks. Classified CAT-2/3/4 by visibility and flank severity per VIS. Photo set at 12/36/72 in (normal + oblique + raking), with context showing band continuity/parallel sets; surface numbering and form fields recorded. Acceptance per VIS §6 (appearance-based).
References & Related Links

Informative references and related internal links for context only. Product acceptance remains governed by the applicable project specifications, referenced product standards, and GlassRenu VIS/DSS procedures.

DSS-M.01.05

Hardware / Fastener Drag Line

DSS-M.01.05
Hardware / Fastener Drag Line
Mechanical scoring on the worked surface — appearance-based classification; acceptance per VIS §6

Definition (Reference)

Localized, directional linear line(s) or short runs created when hardware/fasteners/metal fittings (e.g., screw heads, rail/spider fittings, brackets) contact and move across the glass face, leaving a mechanical score. In raking light the line often exhibits bright “chip-flanks” / micro-chipping where depth increases; it persists after Non-Invasive Reveal (clean & dry) and is not a removable film. Use VIS terminology for micro-chipping / chip flank, worked surface, surface-catch (MSRT), and VIS viewing/lighting for appearance-based classification.

Typical Presentation (Informative)

  • Short, directional linear score emanating from or adjacent to hardware contact points (rails, spiders, standoffs, fasteners), sometimes with intermittent intensity where pressure varied.
  • Sparkling edges in raking light from chip-flanks when depth is greater; may occur as single pass or clustered short runs.
  • Persists after Non-Invasive Reveal (clean & dry). Inspect at VIS geometry (12 / 36 / 72 in; normal + oblique; raking).

Field Identification Cues (Normative)

  • Surface-catch class (MSRT):
  • Commonly SC-2 (clear) for true metal-on-glass scores; SC-1 (slight) when shallow. Perform one light, non-marring pass only; MSRT supports classification, not acceptance. Prefer a polymer stylus if a functional coating may be present.
  • Reveal / lighting / geometry:
  • Complete Non-Invasive Reveal before evaluation (clean & dry). Assess at 12 / 36 / 72 in, normal incidence + oblique sweep (~60°–120°) under raking light, per VIS. Record distances/angles in the photo frames.
  • Location / access:
  • Confirm the cue is on the exposed face (not between panes). Use parallax when IGUs are present—fixed parallax indicates a between-pane condition; record surface numbering #1–#4 / laminate-internal on Forms: If between panes/inaccessible → CAT-5 by location.

Classification Mapping (to VIS-DA) (Normative)

  • Assign CAT by visibility convention and MSRT outcome at VIS viewing/lighting; apply the VIS three-part cueing (surface catch + edge/surface morphology + location/access):
  • CAT-2 — Light: Narrow, clean-edged line(s) with SC-1, no pronounced chip-flanks; limited impact at standard view.
  • CAT-3 — Moderate: SC-2 with minor chip-flanks; noticeable at standard distance.
  • CAT-4 — Severe: SC-2 (clear-to-strong) with rough chip-flanks, possible pits/craters; distinctly visible at standard and wide-field views.
  • (Classification is appearance-based; acceptance is handled separately in VIS §6.)

Indicative Relief / Depth (Informative)

  • CAT-2: ~0.2–1 μm (fine surface incision; minimal flank breakout).
  • CAT-3: ~1–5 μm with incipient micro-chipping along flanks.
  • CAT-4: ≥5 μm with rough chip-flank breakout; occasional pits/craters.
  • (Depths are illustrative for cueing only; VIS classification/acceptance remains appearance-based.)

Differentiation & False Positives (Informative)

  • vs. Straightedge/guide scoring (M.01.02): Guide scoring is ruler-straight over long runs; hardware drag lines are localized near contact points and often short-run.
  • vs. Glass-on-glass tracks (M.01.03): Tracks present paired arcs/lines along a sweep path; hardware drag lines are single, local, originating at hardware.
  • vs. Residue films/overspray (R-family): Residues change with Non-Invasive Reveal; mechanical scores persist. Apply VIS reveal + geometry.
  • vs. Between-pane cues (A-family): Internal features show fixed parallax → CAT-5 by location.

Evidence Package (Documentation Requirements) (Normative)

  1. Photo set (VIS): 12 / 36 / 72 in, normal + oblique, include raking; add macro frames of the line showing edge morphology (chip-flanks if present) and no worked transition edge. Include at least one context frame that shows adjacency to hardware/fastener. Record reveal status, lighting, time, distance/angles.
  2. MSRT result: Record SC class (SC-1 / SC-2 as observed); one pass, non-marring; on suspected coated faces, prefer polymer stylus.
  3. Forms: Pane ID; surface numbering (#1–#4 / laminate-internal); worked surface Y/N; functional coating present on worked surface? (Y/N/Unknown); geometry checklist; attach photos—per VIS Appendix X3.

Mis-ID Pitfalls (Informative)

  • Attempting to “feather” a drag line during inspection can create a worked region/transition edge, which VIS disallows at acceptance for CAT-0…CAT-4. Keep evaluation non-marring and appearance-only.

Reporting Language (Template)

  • M.01.05 Hardware/Fastener Drag Line — Localized linear line at #__ adjacent to hardware/fastener; MSRT = SC-1/SC-2; chip-flanks present/absent (record). Persists after Non-Invasive Reveal. Classified CAT-2/3/4 by visibility and flank severity per VIS. Photo set at 12/36/72 in (normal + oblique + raking), with a context frame showing the hardware origin; surface numbering and form fields recorded. Acceptance per VIS §6 (appearance-based).
References & Related Links

Informative references and related internal links for context only. Product acceptance remains governed by the applicable project specifications, referenced product standards, and GlassRenu VIS/DSS procedures.

M.02

Abrasion Fields (Non‑linear)

DSS-M.02.01

Micro-Abrasion Swirls / Pad Trails (non-linear)

DSS-M.02.01
Micro-Abrasion Swirls / Pad Trails (non-linear)
Mechanical abrasion field on the worked surface — appearance-based classification; acceptance per VIS §6

Definition (Reference)

A non-linear, repetitive swirl or looping trail produced by contact pads, cloths, or small tools traversing the glass face, leaving a fine, directional micro-abrasion field. Under raking light, the field reads as swirls/arcs and may present “modeled micro-texture” (subtle milky relief) when depth increases. Use VIS terminology for directional patterning, modeled micro-texture, micro-chipping/chip flank, MSRT (surface-catch), and VIS viewing/lighting for appearance-based classification.

Typical Presentation (Informative)

  • Clusters of faint arcs/crescents or tight circular loops concentrated in hand-size patches; sometimes overlapping into a broader haze field.
  • Strongest in raking light and oblique sweep; persists after Non-Invasive Reveal (clean & dry).

Field Identification Cues (Normative)

  • Surface-catch class (MSRT):
  • Often SC-0 to SC-1 for very fine swirl (non-tactile to slight); SC-2 when the field contains tactile lines with micro-chipping/chip flanks. Perform one light, non-marring pass only; MSRT supports classification, not acceptance. Prefer a polymer stylus if a functional coating may be present.
  • Reveal / lighting / geometry:
  • Complete Non-Invasive Reveal (distilled/neutral-pH water; lint-free microfiber; no blades/abrasives/chemicals before evaluation). Inspect at 12 / 36 / 72 in, normal incidence + oblique sweep (~60°–120°) with raking light, per VIS. Record distances/angles in-frame.
  • Location / access:
  • Confirm the cue is on the exposed face (not between panes). Use parallax to rule out internal look-alikes (between-pane cues show fixed parallax); record surface numbering #1–#4 / laminate-internal on Forms:

Classification Mapping (to VIS-DA) (Normative)

  • Assign CAT by visibility convention and MSRT outcome, applying the VIS three-part cueing (surface catch + morphology + location/access):
  • CAT-1 — Faint: SC-0 / SC-1; non-tactile swirls, no chip flanks, and no localized edge; read mainly in raking light; do not localize at acceptance geometry.
  • CAT-2 — Light: SC-1; clean-edged fine lines or light micro-texture; limited visibility at standard view.
  • CAT-3 — Moderate: SC-2 (clear) elements within the swirl field or modeled micro-texture noticeable at standard distance.
  • CAT-4 — Severe: SC-2 (clear-to-strong) with rough chip-flank segments, pits/craters, or a broad matte/frosted field visible at standard and wide-field views.
  • (Classification is appearance-based; acceptance is handled separately in VIS §6.)

Indicative Relief / Depth (Informative)

  • CAT-1: ~0–0.2 μm (non-tactile field; tone/shine change only).
  • CAT-2: ~0.2–1 μm (fine lineation; minimal edge breakout).
  • CAT-3: ~1–5 μm with incipient micro-chipping in some loops.
  • CAT-4: ≥5 μm with rough chip-flank segments and local pits/craters.
  • (Depths are illustrative for cueing only; VIS classification/acceptance remains appearance-based.)

Differentiation & False Positives (Informative)

  • vs. Residue films/overspray (R-family): Residues change with Non-Invasive Reveal; true micro-abrasion persists.
  • vs. Burnish/haze field (M.02.04): Burnish reads as a broader, non-directional sheen shift; pad swirls show distinct directional loops.
  • vs. Squeegee burn lines (M.02.05): Squeegee burns are typically linear along pull paths; swirls are looped/curvilinear.
  • vs. Coating anomalies (Co-family): Coating rub/patch/colour shift is area-based, often SC-0/SC-1, and lacks chip flanks; coating anomalies on the worked face are not permitted at acceptance.
  • vs. Between-pane cues (A-family): Internal features show fixed parallax → CAT-5 by location.

Evidence Package (Documentation Requirements) (Normative)

  1. Photo set (VIS): 12 / 36 / 72 in, normal + oblique, include raking; add macro frames showing the swirl geometry and edge morphology (confirm absence/presence of chip flanks) and no worked transition edge. Record reveal status, lighting, time; annotate distance/angle in-frame.
  2. MSRT result: Record SC class (SC-0 / SC-1 / SC-2 as observed); one pass, non-marring; on suspected coated faces, prefer polymer stylus or rely on visual cues.
  3. Forms: Pane ID; surface numbering (#1–#4 / laminate-internal); worked surface Y/N; functional-coating on worked surface? (Y/N/Unknown); viewing-geometry checklist; photos attached—per VIS Appendix X3.

Mis-ID Pitfalls (Informative)

  • Do not “test-polish” to make swirls more visible—this creates a worked region/transition edge that VIS disallows at acceptance for CAT-0…CAT-4. Keep evaluation non-marring and appearance-only.

Reporting Language (Template)

  • M.02.01 Micro-Abrasion Swirls / Pad Trails — Curvilinear swirl field at #__ confirmed after Non-Invasive Reveal; MSRT = SC-0/SC-1/SC-2; chip-flanks absent/present (record). Classified CAT-1/2/3/4 by visibility and flank severity per VIS. Photo set at 12/36/72 in (normal + oblique + raking); surface numbering and form fields recorded. Acceptance per VIS §6 (appearance-based).
References & Related Links

Informative references and related internal links for context only. Product acceptance remains governed by the applicable project specifications, referenced product standards, and GlassRenu VIS/DSS procedures.

DSS-M.02.02

Cross-Hatch Scuffing / Sanding Pattern (non-linear)

DSS-M.02.02
Cross-Hatch Scuffing / Sanding Pattern (non-linear)
Mechanical abrasion field on the worked surface — appearance-based classification; acceptance per VIS §6

Definition (Reference)

A non-linear, intersecting lattice of fine lines produced by hand pads, sanding media, or abrasive cloths moving in overlapping, multi-directional passes, leaving a cross-hatched abrasion field. In raking light the field reads as criss-crossed micro-lines; with increasing depth, portions show modeled micro-texture (subtle milky relief) and may include micro-chipping (“chip flanks”) on some strokes. Use VIS terminology for directional patterning, modeled micro-texture, micro-chipping / chip flank, MSRT (surface-catch), and VIS viewing/lighting; classification is appearance-based.

Typical Presentation (Informative)

  • Overlapping diagonal strokes creating an X-weave or cross-lattice; can concentrate in hand-sized patches that sometimes coalesce into a broader haze.
  • Strongest in raking light and oblique sweep; persists after Non-Invasive Reveal (clean & dry).

Field Identification Cues (Normative)

  • Surface-catch class (MSRT):
  • SC-0 / SC-1 for very fine cross-hatch (non-tactile to slight); SC-2 (clear) where individual strokes exhibit chip flanks or where the field shows tactile lineation. Perform one light, non-marring pass only; MSRT supports classification, not acceptance. Prefer a polymer stylus if a functional coating may be present.
  • Reveal / lighting / geometry:
  • Complete Non-Invasive Reveal (distilled/neutral-pH water; lint-free microfiber; no blades/abrasives/chemicals before evaluation). Inspect at 12 / 36 / 72 in, with normal incidence + oblique sweep (~60°–120°) under raking light, and record distances/angles in-frame.
  • Location / access:
  • Confirm the cue is on the exposed face (not between panes). Use parallax in IGUs—fixed parallax indicates a between-pane condition; record surface numbering (#1–#4 / laminate-internal) on Forms:

Classification Mapping (to VIS-DA) (Normative)

  • Assign CAT by visibility convention + MSRT + edge/morphology (VIS three-part cueing):
  • CAT-1 — Faint: SC-0 / SC-1; fine cross-hatch without chip flanks; reads mainly in raking light; does not localize at acceptance geometry.
  • CAT-2 — Light: SC-1; clean-edged fine lineation or light micro-texture; limited visibility at standard view.
  • CAT-3 — Moderate: Portions of the field show SC-2 (clear) or modeled micro-texture noticeable at standard distance.
  • CAT-4 — Severe: SC-2 (clear-to-strong) with rough chip-flank segments, pits/craters, or a broad matte/frosted field distinctly visible at standard and wide-field views.
  • (Classification is appearance-based; acceptance is handled separately in VIS §6.)

Indicative Relief / Depth (Informative)

  • CAT-1: ~0–0.2 μm (non-tactile micro-field; tone/shine change only).
  • CAT-2: ~0.2–1 μm (fine intersecting lineation; minimal edge breakout).
  • CAT-3: ~1–5 μm with incipient micro-chipping on some strokes.
  • CAT-4: ≥5 μm with rough chip-flank segments and local pits/craters.
  • (Depths are illustrative for cueing only; VIS classification/acceptance remains appearance-based.)

Differentiation & False Positives (Informative)

  • vs. Micro-abrasion swirls/pad trails (M.02.01): Swirls present looped/curvilinear trails; cross-hatch shows intersecting straight/oblique passes forming a lattice.
  • vs. Burnish/haze field (M.02.04): Burnish reads as broader, non-directional sheen shift; cross-hatch retains discernible stroke geometry under raking.
  • vs. Residue films/overspray (R-family): Residues change with Non-Invasive Reveal; true abrasion persists.
  • vs. Coating anomalies on worked surface (Co-family): Coating rub/patchiness is area-based, often SC-0/SC-1, and lacks chip flanks; visible anomalies on the worked surface are not permitted at acceptance.
  • vs. Between-pane cues (A-family): Internal features show fixed parallax → CAT-5 by location.

Evidence Package (Documentation Requirements) (Normative)

  1. Photo set (VIS): 12 / 36 / 72 in, normal + oblique, include raking; add macro frames showing cross-angle stroke geometry and edge morphology (note presence/absence of chip flanks) and no worked transition edge. Record reveal status, lighting, time; annotate distance/angle in-frame.
  2. MSRT result: Record SC class (SC-0 / SC-1 / SC-2 as observed); one pass, non-marring; on suspected coated faces, prefer polymer stylus or rely on visual cues.
  3. Forms: Pane ID; surface numbering (#1–#4 / laminate-internal); worked surface Y/N; functional-coating on worked surface? (Y/N/Unknown); viewing-geometry checklist; photos attached—per VIS Appendix X3.

Mis-ID Pitfalls (Informative)

  • Do not “test-sand” or “feather” during inspection—this creates a worked region/transition edge that VIS disallows at acceptance for CAT-0…CAT-4. Keep evaluation non-marring and appearance-only.

Reporting Language (Template)

  • M.02.02 Cross-Hatch Scuffing / Sanding Pattern — Intersecting multi-directional micro-lines at #__ confirmed after Non-Invasive Reveal; MSRT = SC-0/SC-1/SC-2; chip-flanks absent/present (record). Classified CAT-1/2/3/4 by visibility and flank severity per VIS. Photo set at 12/36/72 in (normal + oblique + raking); surface numbering and form fields recorded. Acceptance per VIS §6 (appearance-based).
References & Related Links

Informative references and related internal links for context only. Product acceptance remains governed by the applicable project specifications, referenced product standards, and GlassRenu VIS/DSS procedures.

DSS-M.02.03

Directional Webbing (repetitive paths)

DSS-M.02.03
Directional Webbing (repetitive paths)
Mechanical abrasion field on the worked surface — appearance-based classification; acceptance per VIS §6

Definition (Reference)

A repeating, directional network of fine lines formed by a tool, pad, or abrasive traversing the glass in overlapping, semi-regular paths, producing a “spider webbed” pattern (linear/curvilinear strands with recurring orientation). Under raking light, strands may show edge sparkle; at higher severity, portions exhibit modeled micro-texture (subtle milky relief) and chip-flanks on some strokes. Apply VIS terminology for directional patterning, modeled micro-texture, micro-chipping / chip flank, MSRT (surface-catch), and VIS viewing/lighting; classification is appearance-based.

Typical Presentation (Informative)

  • Semi-regular strands (sometimes grid-like or mesh-like) with dominant direction and secondary cross-paths, spanning hand-sized patches or larger zones.
  • Strongest in raking & oblique views, persists after Non-Invasive Reveal (clean & dry).

Field Identification Cues (Normative)

  • Surface-catch class (MSRT):
  • Commonly SC-1 for shallow webbing; SC-2 (clear) where strands exhibit chip-flanks or tactile lineation. Conduct one light, non-marring pass only; MSRT supports classification, not acceptance. Use polymer stylus if a functional coating may be present.
  • Reveal / lighting / geometry:
  • Perform Non-Invasive Reveal; then evaluate at 12 / 36 / 72 in, normal incidence + oblique sweep (~60°–120°), under raking light; record distances/angles in-frame.
  • Location / access:
  • Confirm the cue is on the exposed face. In IGUs, use parallax—fixed parallax indicates a between-pane condition; record surface numbering #1–#4 / laminate-internal on Forms: If between panes/inaccessible → CAT-5 by location.

Classification Mapping (to VIS-DA) (Normative)

  • Assign CAT via VIS visibility convention + MSRT outcome + edge/morphology (three-part cueing):
  • CAT-1 — Faint: SC-0 / SC-1, non-tactile webbing; reads mainly in raking light; no chip-flanks, does not localize at acceptance geometry.
  • CAT-2 — Light: SC-1, clean-edged fine lineation; limited visibility at standard view.
  • CAT-3 — Moderate: Portions show SC-2 (clear) and/or modeled micro-texture noticeable at standard distance.
  • CAT-4 — Severe: SC-2 (clear-to-strong) with rough chip-flanks, pits/craters, or broad matte/frosted sectors distinctly visible at standard and wide-field views.
  • (Classification is appearance-based; acceptance is handled separately in VIS §6.)

Indicative Relief / Depth (Informative)

  • CAT-1: ~0–0.2 μm (non-tactile web; tone/shine change only).
  • CAT-2: ~0.2–1 μm (fine directional strands; minimal edge breakout).
  • CAT-3: ~1–5 μm with incipient micro-chipping on some strands.
  • CAT-4: ≥5 μm with rough chip-flank segments and local pits/craters.
  • (Depths are illustrative for cueing only; VIS classification/acceptance remains appearance-based.)

Differentiation & False Positives (Informative)

  • vs. Cross-hatch scuffing (M.02.02): Cross-hatch is a lattice/X-weave of intersecting strokes; directional webbing shows dominant travel paths with more mesh-like continuity.
  • vs. Micro-abrasion swirls (M.02.01): Swirls are looped/curvilinear clusters; webbing is path-oriented with repetitive, directed strands.
  • vs. Residue films/overspray (R-family): Residues change with Non-Invasive Reveal; true mechanical webbing persists.
  • vs. Coating anomalies (Co-family): Coating rub/patchiness is area-based, typically SC-0/SC-1 and lacks chip-flanks; visible anomalies on the worked surface are not permitted at acceptance.
  • vs. Between-pane cues (A-family): Internal features show fixed parallax → CAT-5 by location.

Evidence Package (Documentation Requirements) (Normative)

  1. Photo set (VIS): 12 / 36 / 72 in, normal + oblique, include raking; add macro frames of strand geometry and edge morphology (presence/absence of chip-flanks), and show no worked transition edge. Record reveal status, lighting, time; annotate distance/angle in-frame.
  2. MSRT result: Record SC class (SC-0 / SC-1 / SC-2 as observed); one pass, non-marring; for suspected coated faces, prefer polymer stylus or rely on visual cues.
  3. Forms: Pane ID; surface numbering (#1–#4 / laminate-internal); worked surface Y/N; functional-coating on worked surface? (Y/N/Unknown); viewing-geometry checklist; photos attached—per VIS Appendix X3.

Mis-ID Pitfalls (Informative)

  • Do not “feather” or “blend” the web during inspection—this creates a worked region/transition edge that VIS disallows at acceptance for CAT-0…CAT-4. Keep evaluation non-marring and appearance-only.

Reporting Language (Template)

  • M.02.03 Directional Webbing (repetitive paths) — Directional strand network at #__ confirmed after Non-Invasive Reveal; MSRT = SC-0/SC-1/SC-2; chip-flanks absent/present (record). Classified CAT-1/2/3/4 by visibility and flank severity per VIS. Photo set at 12/36/72 in (normal + oblique + raking); surface numbering and form fields recorded. Acceptance per VIS §6 (appearance-based).
References & Related Links

Informative references and related internal links for context only. Product acceptance remains governed by the applicable project specifications, referenced product standards, and GlassRenu VIS/DSS procedures.

DSS-M.02.04

Burnish / Haze Field (localized over-polish)

DSS-M.02.04
Burnish / Haze Field (localized over-polish)
Mechanical abrasion field on the worked surface — appearance-based classification; acceptance per VIS §6

Definition (Reference)

A localized, non-uniform change in sheen/clarity produced by over-refinement or frictional over-polish (pad/cloth/tool held and worked in place), creating a subtle micro-texture that scatters light. Under raking light, the area reads as a matte or milky field (modeled micro-texture) that persists after Non-Invasive Reveal (clean & dry). At higher severities a visible transition edge can appear around the worked spot. Use VIS terms Non-Invasive Reveal, modeled micro-texture, transition edge, MSRT (surface-catch), and VIS viewing/lighting conventions.

Typical Presentation (Informative)

  • Patch-like haze (coin- to hand-sized) with soft perimeter; strongest in raking and oblique sweep views.
  • May present faint directional bias from tool motion; at higher severity a ring/edge (transition edge) demarcates the worked area.

Field Identification Cues (Normative)

  • Surface-catch class (MSRT):
  • Often SC-0 to SC-1 (non-tactile to slight) for low-severity burnish; SC-2 (clear) if localized micro-texture exhibits tactile relief. Perform one light, non-marring pass; MSRT supports classification, not acceptance. Prefer polymer stylus if a functional coating may be present.
  • Reveal / lighting / geometry:
  • Complete Non-Invasive Reveal (distilled/neutral-pH water; lint-free microfiber; dry fully). Evaluate at 12 / 36 / 72 in, normal incidence + oblique sweep (~60°–120°) under raking light; record distances/angles in-frame.
  • Location / access:
  • Confirm the cue is on the exposed face. Use parallax on IGUs—fixed parallax indicates a between-pane condition; log surface numbering #1–#4 / laminate-internal on Forms: If internal/inaccessible → CAT-5 by location.

Classification Mapping (to VIS-DA) (Normative)

  • Assign CAT per VIS visibility convention + MSRT + morphology (three-part cueing):
  • CAT-1 — Faint: SC-0 / SC-1; low-contrast haze, no transition edge, not localized at acceptance geometry.
  • CAT-2 — Light: SC-1; discernible micro-texture with clean perimeter, limited visibility at standard view.
  • CAT-3 — Moderate: SC-2 (clear) micro-texture noticeable at standard distance; perimeter may begin to read as a transition edge.
  • CAT-4 — Severe: SC-2 (clear-to-strong) with broad matte/frosted field and a visible transition edge distinctly readable at standard and wide-field views.
  • (Classification is appearance-based; acceptance is handled separately in VIS §6.)

Indicative Relief / Depth (Informative)

  • CAT-1: ~0–0.2 μm (non-tactile micro-field; tone/shine change only).
  • CAT-2: ~0.2–1 μm (fine micro-texture; minimal relief).
  • CAT-3: ~1–5 μm with incipient tactile relief.
  • CAT-4: ≥5 μm with distinct tactile relief and matte/frosted character.
  • (Depths are illustrative for cueing only; VIS classification/acceptance remains appearance-based.)

Differentiation & False Positives (Informative)

  • vs. Micro-abrasion swirls / pad trails (M.02.01): Swirls show looped trails; burnish is a patch-like field with softer geometry.
  • vs. Cross-hatch scuffing (M.02.02): Cross-hatch shows intersecting strokes; burnish lacks discrete lineation.
  • vs. Roller wave / optical features (P.01.01): Roller wave is pane-scale, periodic, SC-0; burnish is localized and may show a transition edge.
  • vs. Residue films/overspray (R-family): Residues change with Non-Invasive Reveal; true burnish persists.
  • vs. Coating anomalies on worked surface (Co-family): Coating rub/patchiness is area-based, often SC-0/SC-1, but visible anomalies on a worked surface are not permitted at acceptance.

Evidence Package (Documentation Requirements) (Normative)

  1. Photo set (VIS): 12 / 36 / 72 in, normal + oblique, include raking; add macro frames that show field texture and absence/presence of a transition edge (no new worked edge created). Annotate distance/angles in-frame; record reveal status, lighting, time.
  2. MSRT result: Record SC class (SC-0 / SC-1 / SC-2 as observed); one pass, non-marring; on suspected coated faces, prefer polymer stylus or rely on visual cues.
  3. Forms: Pane ID; surface numbering (#1–#4 / laminate-internal); worked surface Y/N; functional coating on worked surface? (Y/N/Unknown); viewing-geometry checklist; photos attached—per VIS Appendix X3.

Mis-ID Pitfalls (Informative)

  • Do not “blend” or “feather” during inspection—this creates a worked region with a visible transition edge, which VIS disallows at acceptance for CAT-0…CAT-4. Keep evaluation non-marring and appearance-only.

Reporting Language (Template)

  • M.02.04 Burnish / Haze Field (localized over-polish) — Localized matte/milky field at #__ confirmed after Non-Invasive Reveal; MSRT = SC-0/SC-1/SC-2; transition edge absent/present (record). Classified CAT-1/2/3/4 by visibility and relief per VIS. Photo set at 12/36/72 in (normal + oblique + raking); surface numbering and form fields recorded. Acceptance per VIS §6 (appearance-based).
References & Related Links

Informative references and related internal links for context only. Product acceptance remains governed by the applicable project specifications, referenced product standards, and GlassRenu VIS/DSS procedures.

DSS-M.02.05

Squeegee Burn Lines (Friction Film)

DSS-M.02.05
Squeegee Burn Lines (Friction Film)
Mechanical / Abrasion Fields — Non-linear; often residue-assisted friction mark rather than true relief

Definition (Reference)

Narrow, linear or banded appearance change that follows squeegee travel paths during window cleaning. Typically a friction-film or light burnish produced by dry/dirty rubber, residue-lubricant mismatch, or excessive pressure. Presents primarily as a visibility cue under raking/oblique light; may be non-tactile (film) or show trace relief where the surface has been lightly burnished. Use VIS inspection lighting/geometry and Non-Invasive Reveal to separate removable films from bonded/burnished appearance change.

Typical Presentation (Informative)

  • Parallel, evenly spaced narrow lines that match known squeegee strokes (top-to-bottom pulls or lateral finishes).
  • Most apparent in reflection at oblique sweep with raking light; fades at normal incidence.
  • On reveal, detergent/surfactant films may diminish; a true burnish/haze line can persist.

Field Identification Cues (Normative)

  • Surface-catch class (MSRT):
  • SC-0 (film only) to SC-1 (trace burnish); one, light, non-marring pass only to sense relief—do not abrade. Prefer a polymer stylus on suspected coated faces.
  • Reveal/lighting/geometry:
  • Inspect after Non-Invasive Reveal (clean & dry). View at 12 in, 36 in, 72 in at normal incidence and by 60°–120° oblique sweep under raking light.
  • Location/access:
  • Worked/exposed face only; log product family and surface numbering (#1–#4; laminate-internal) on Forms:

Classification Mapping (to VIS-DA) (Normative)

  • If post-reveal cue remains visible but non-tactile → trend CAT-1 (faint/non-relief film/transfer).
  • If trace relief is detected (SC-1) with clean, fine edges and no chip flanks → CAT-2 (light).
  • Presence of chip flanks, pits/craters, or modeled micro-texture elevates to CAT-3/4 per morphology (mechanical abrasion rather than mere film).
  • If fixed parallax indicates between-pane look-alike → CAT-5 (out of in-place scope by location).

Indicative Relief / Depth (Informative)

  • Residual film / lubricant line: ~0 µm (SC-0).
  • Light burnish (appearance change without edge flaking): ~0.1–0.5 µm equivalent (SC-0 to SC-1).
  • Depth values are indicative and used only to align with VIS CAT ranges; acceptance remains appearance-based under VIS.

Differentiation & False Positives (Informative)

  • vs. Detergent/surfactant film (R.04.01): films respond to reveal; true burnish persists post-reveal.
  • vs. Micro-abrasion swirls / pad trails (M.02.01): swirls are arcuate/cross-hatch and not strictly linear; squeegee burn follows straight pulls and window edges. (Use VIS directional-patterning definitions.)
  • vs. Coating rub/patchiness (Co.01/Co.03): coating anomalies are on coated worked surfaces and are disallowed at acceptance on coated faces; document coating presence in Forms:
  • vs. True scoring (M.01.*): scoring shows clear catch and often chip flanks; escalate CAT accordingly.

Evidence Package (Documentation Requirements) (Normative)

  1. Photo set (VIS): 12 / 36 / 72 in at normal + oblique; include raking frames that show linearity parallel to squeegee travel; include a straight-edge reflection for alignment.
  2. MSRT result: record SC-0/SC-1 (single, non-marring pass; polymer stylus on suspected coatings).
  3. Forms: Pane ID; product family & surface numbering; worked surface Y/N; functional coating present on worked surface? Y/N/Unknown; reveal status; lighting/time; geometry checklist; photos attached.
  4. Classification call: CAT per cues above; note “film vs. burnish” basis (post-reveal, MSRT class, morphology).

Mis-ID Pitfalls (Informative)

  • “Testing” with repeated hard passes can create the burnish you are trying to diagnose; MSRT is single-pass only.
  • Treating a coating rub as a cleaning line—coating anomalies on worked surfaces are not permissible at acceptance; escalate appropriately.
  • Calling a removable film “damage” without completing reveal.

Reporting Language (Template)

  • M.02.05 Squeegee Burn Lines (Friction Film) — Narrow linear bands aligned with documented squeegee travel, visible under VIS geometry after Non-Invasive Reveal. MSRT: SC-0 (film) / SC-1 (trace burnish) noted; no chip flanks/pitting. Classification: CAT-1 (non-relief film) or CAT-2 (trace burnish) per cues; no between-pane parallax. Photos at 12/36/72 in (normal/oblique; raking) attached; forms completed per VIS Appendix X3.
References & Related Links

Informative references and related internal links for context only. Product acceptance remains governed by the applicable project specifications, referenced product standards, and GlassRenu VIS/DSS procedures.

M.03

Edge & Corner Damage

DSS-M.03.01

Edge Micro-Chipping (minor)

DSS-M.03.01
Edge Micro-Chipping (minor)
Mechanical — perimeter/arris

Definition (Reference)

Small, bright edge fractures or “nicks” at or just inside the perimeter arris. Under raking light they present as sparkly facets; at higher severities they may form short “chip flanks” pointing into the face. “Micro-chipping” and “chip flank” are defined in VIS terminology and used here strictly as appearance/morphology cues (classification is appearance-only).

Typical Presentation (Informative)

  • Pinpoint to sub-millimetre chips along the edge/arris; isolated or lightly scattered.
  • Bright, faceted reflections in raking views; little to no continuous lineation across the face.
  • More visible on dark backdrops; persistence after a Non-Invasive Reveal (clean & dry).

Field Identification Cues (Normative)

  • Surface-catch class (MSRT): SC-1 (slight) to SC-2 (clear) when the stylus traverses a chip that intrudes onto the exposed face. One light, non-marring pass only per VIS §5.5; do not abrade or “probe.” Prefer a polymer stylus on suspected coated faces.
  • Visual signature: Discrete, bright facets at the perimeter; may show tiny chip flanks where depth increases. Lack of continuous lineation distinguishes from scoring/tracks.
  • Viewing / lighting: Evaluate at 12 / 36 / 72 in, normal incidence + oblique sweep (~60°–120°) under raking light; surfaces must be clean & dry.
  • Location / access: Record pane ID, product family, and surface numbering (#1–#4; laminate-internal if applicable) on forms; acceptance pertains to the exposed surface being evaluated.

Classification Mapping (to VIS-DA) (Normative)

  • CAT-2 (Light): Small, shallow chips with SC-1 and clean edges, minimal visibility at standard view.
  • CAT-3 (Moderate): Clear catch (SC-2) and minor chip flanks; noticeable at standard view.
  • CAT-4 (Severe): Pronounced flanks and/or gross edge chipping extending onto the face; pits/craters present.
  • CAT-5 (Out of in-place scope): If indicators show the condition is between panes/inaccessible (fixed parallax in IGU) → CAT-5 by location; refer per protocol.

Indicative Relief / Depth (Informative)

  • Numeric depth is not required for classification; use MSRT class + morphology. Minor edge micro-chipping that just kisses the face typically reads SC-1 to SC-2 qualitatively (shallow to moderate relief by feel).

Differentiation & False Positives (Informative)

  • vs. Seamed/arris edge texture (P.03.01): Factory arris shows a uniform frosted band or fine grind lines with SC-0 on the adjacent face and no chip-flank sparkle. Do not conflate with damage.
  • vs. Edge grind/polish pattern (P.03.02): Uniform, edge-parallel grind/polish appearance, SC-0 on the face; no bright chip facets.
  • vs. Linear scoring (M.01): Scoring forms extended lines across the face with clear catch; micro-chipping appears as discrete edge nicks rather than a continuous track.
  • vs. Drill/slot exit lip (P.03.04): Exit lips are confined to hole/slot perimeters as a factory artifact; on the face MSRT reads SC-0 and no chip-flank morphology.

Evidence Package (Documentation Requirements) (Normative)

  1. Photo set (VIS): 12 / 36 / 72 in, normal + oblique; include raking macros of representative chips and at least one context frame showing overall edge continuity.
  2. MSRT result: Record SC-class (none/slight/clear) with one light, non-marring pass; on coated faces, prefer polymer stylus.
  3. Forms: Pane ID; product family & surface numbering; worked surface Y/N; functional coating present on worked surface? (Y/N/Unknown); reveal status; lighting/time; geometry checklist; photos attached.
  4. Acceptance split: Acceptance is judged per VIS Section 6 at 12/36/72 in; classification ≠ acceptance. Do not conflate perimeter factory features with face-side acceptance.

Reporting Language (Template)

  • M.03.01 — Edge Micro-Chipping (minor): Discrete, bright micro-chips along the perimeter arris observed under VIS geometry; MSRT on the adjacent face records SC-1/SC-2 at chip locations. No continuous scoring track. Classified CAT-2/CAT-3 by appearance (see notes). Documented with raking macros and VIS forms; acceptance per VIS §6 at 12/36/72 in.
References & Related Links

Informative references and related internal links for context only. Product acceptance remains governed by the applicable project specifications, referenced product standards, and GlassRenu VIS/DSS procedures.

DSS-M.03.02

Edge Gross Chipping / “Clamshell”

DSS-M.03.02
Edge Gross Chipping / “Clamshell”
Mechanical — edge & corner damage

Classification & Scope (Normative)

Gross edge chipping (“clamshells”) are discrete, larger shell-type fractures at or near the perimeter, typically from impact, improper handling, or stress at drilled/notched features. Classification is appearance-only per VIS; restoration methodology is out of scope. Inspect under VIS lighting/geometry and record surface numbering and worked-surface status on Forms:

Typical Presentation (Informative)

  • Crescent or shell-shaped voids at the arris/edge; may expose bright, rough fracture facets.
  • Can propagate from hardware holes/notches; sometimes accompanied by short radial micro-cracks.
  • Highly visible in raking light; often apparent at standard view once size increases.
  • (See VIS geometry & raking use.)

Field Identification Cues (Normative)

  • Surface-catch class (MSRT)
  • Clear detect at chip perimeter; perform one light, non-marring pass only to sense relief (SC-2). On coated faces, prefer polymer stylus or rely on visual/location cues per VIS §5.5.
  • Visual signature
  • Rough chip flanks with bright, irregular fracture edges; may include pits/craters adjacent to the edge land or hole perimeter. (Chip-flank/rough-edge morphology is determinative for escalation from minor edge nicks.)
  • Viewing/lighting
  • Evaluate at 12 / 36 / 72 in using normal incidence + oblique sweep (~60°–120°) with raking light; surfaces clean/dry (VIS §5).
  • Location/access.
  • Log pane ID and surface numbering (#1–#4; laminate-internal) on forms; acceptance pertains to the exposed surface being evaluated. If fixed parallax indicates a between-pane cue, classify CAT-5 and refer.

Severity & CAT Mapping (Normative)

  • Assign category by appearance cues + MSRT (not by intent to repair):
  • CAT-2 → CAT-3 (lower bound): Larger, shallow shell with slight–clear catch and relatively clean flanks; visible primarily in raking light at close/standard view. Indicative depth: ~10–40 µm.
  • CAT-3 (typical): Pronounced clamshell(s) with clear catch; rough, bright chip flanks; noticeable at standard view. Indicative depth: ~40–100 µm.
  • CAT-4 (upper bound): Deep/extended shelling, multiple chips with secondary pits/craters or short cracks; strong catch; clearly visible at standard & wide-field views. Indicative depth: ~100–250 µm+.
  • CAT-5 (by location/condition): Any case with through-thickness cracking, moving pane in frame, or between-pane/inaccessible location → out of in-place scope; document and refer.
  • Depth bands are indicative to anchor the spectrum for VIS-DA; assign CAT by visual/morphology + MSRT under VIS conditions.

Differentiation & Mis-ID Pitfalls (Informative)

  • vs. Edge micro-chipping (M.03.01): Minor edge nicks are small, isolated, and may lack bright rough flanks; gross clamshells show larger shell faces with pronounced, bright fracture edges and clear catch.
  • vs. Factory edge finishes (P.03.01 / P.03.02): Seamed/arris bands and edge grind/polish patterns are uniform, edge-bound, and read SC-0 on the face; they do not present discrete chip flanks or pits.
  • vs. Drill/slot exit lip (P.03.04): A continuous exit-side burr/lip is a manufacturing artifact at hole/slot perimeter; escalate only if discrete face-side chips propagate from the exit.

Evidence Package (Documentation Requirements) (Normative)

  1. Photo set (VIS): 12 / 36 / 72 in, normal + oblique; include raking macros of chip flanks and at least one context frame showing the edge location (or hole/slot) and absence/presence of a worked perimeter.
  2. MSRT result: Record SC class (typically SC-2 “clear”); one pass only; non-marring; polymer stylus preferred on suspected coated faces.
  3. Forms: Pane ID; product family + surface numbering; worked surface Y/N; functional coating present on worked surface (Y/N/Unknown); reveal status; lighting/time; geometry checklist; photos attached.
  4. Acceptance split: VIS governs post-restoration appearance; transition edges and chip-flank morphology remain disqualifying at acceptance for CAT-1…CAT-4; structural/inaccessible → CAT-5 and refer.

Reporting Language (Template)

  • M.03.02 Edge Gross Chipping / Clamshell — Discrete shell-type edge loss at [edge/arrises or hole/notch], MSRT = SC-2 (clear) with bright, rough chip flanks; visible at [12/36/72 in per VIS]. Classify CAT-[3/4] by morphology under VIS-DA. If fixed parallax indicates between-pane location or if through-thickness cracking is observed, record CAT-5 and refer per project protocol.
References & Related Links

Informative references and related internal links for context only. Product acceptance remains governed by the applicable project specifications, referenced product standards, and GlassRenu VIS/DSS procedures.

DSS-M.03.03

Corner Crush / Corner Spall

DSS-M.03.03
Corner Crush / Corner Spall
Mechanical — edge & corner damage

Classification & Scope (Normative)

Corner crush / corner spall are localized, shell-type losses at the glass corner/near-corner arris caused by impact, handling, or bearing stress. They present as irregular clamshells and faceted fracture surfaces; short, radial micro-cracks may be present. Classification here is appearance-only per VIS (method-agnostic). Inspect under VIS lighting/geometry and record surface numbering and worked-surface status on Forms:

Typical Presentation (Informative)

  • Crescent/shell-shaped void at the extreme corner or within ~5–25 mm of the corner arris.
  • Bright, rough chip flanks visible in raking light; may be accompanied by a small debris field (tiny pits) trailing onto the face.
  • Often visible at standard view once shell size increases; more conspicuous against dark backdrops. (Use VIS raking & oblique sweep.)

Field Identification Cues (Normative)

  • Surface-catch class (MSRT)
  • Expect SC-2 (clear) at the chip perimeter when the loss intrudes onto the exposed face. Perform one light, non-marring pass only per VIS §5.5; do not abrade or “probe.” Prefer a polymer stylus on suspected coated faces. MSRT supports classification, not acceptance.
  • Visual signature
  • Irregular clamshell geometry with rough, bright fracture edges; may show short micro-cracks radiating from the corner or from hardware-related stress points (if applicable). Distinguish from uniform factory edge finishes.
  • Viewing / lighting
  • Evaluate after Non-Invasive Reveal (clean & dry) at 12 / 36 / 72 in, normal incidence and oblique sweep (~60°–120°) under raking light.
  • Location / access
  • Record pane ID and surface numbering (#1–#4; laminate-internal) on forms; acceptance pertains to the exposed surface being evaluated. If fixed parallax indicates a between-pane look-alike, classify CAT-5 (out of in-place scope) and refer.

Severity & CAT Mapping (Normative)

  • Assign category by appearance + MSRT + morphology (three-part cueing under VIS); depth values below are indicative only:
  • CAT-2 → low CAT-3 (lower bound): Small, shallow shell intruding minimally onto the face; SC-1–SC-2; mainly a raking-light cue at close/standard view. Indicative depth: ~10–40 µm.
  • CAT-3 (typical): Pronounced clamshell with clear catch and bright, rough chip flanks; noticeable at standard view. Indicative depth: ~40–120 µm.
  • CAT-4 (upper bound): Deep/extended spall with secondary pits/craters and/or short cracks; clear/strong catch, clearly visible at standard and wide-field views. Indicative depth: ~120–300 µm+.
  • CAT-5 (by location/condition): Between-pane/inaccessible or structural integrity indicators (active cracks, moving pane) → out of in-place scope; document and refer per project protocol.
  • CAT assignment is appearance-based under VIS; acceptance is separate (VIS §6).

Differentiation & Mis-ID Pitfalls (Informative)

  • vs. Edge micro-chipping (M.03.01): Micro-chips are tiny, isolated nicks with less face intrusion; gross spalls show larger shell faces and rough flanks. (Uniform factory edges remain SC-0 on the face.)
  • vs. Factory seamed/arris edge (P.03.01) or edge grind/polish pattern (P.03.02): Factory features are uniform, edge-bound and read SC-0 on the face; no discrete chip flanks.
  • vs. Drill/slot exit lip (P.03.04): Exit lips are continuous burrs confined to hole/slot perimeters; escalate only if discrete face-side chips propagate from the feature.

Evidence Package (Documentation Requirements) (Normative)

  1. Photo set (VIS): 12 / 36 / 72 in, normal + oblique, include raking macros of chip flanks and at least one context frame showing corner location and any absence/presence of a worked transition edge. Record distance/angle in-frame.
  2. MSRT result: Record SC class (SC-0 / SC-1 / SC-2 as observed). One pass, non-marring; on suspected coated faces use polymer stylus or rely on visual cues.
  3. Forms: Pane ID; product family & surface numbering (#1–#4; laminate-internal); worked surface Y/N; functional coating present on worked surface? (Y/N/Unknown); reveal status; lighting/time; viewing geometry checklist; photos attached.
  4. Acceptance split: VIS §6 governs post-restoration appearance; classification ≠ acceptance. Transition edges, chip-flank texture, and coating anomalies remain disqualifying per the applicable acceptance category.

Reporting Language (Template)

  • M.03.03 Corner Crush / Corner Spall — Localized clamshell loss at corner/near-corner arris on surface #___. MSRT = SC-2 (clear) at chip perimeter; bright, rough chip flanks present. Visible at [12/36/72 in] under VIS geometry. Classification: CAT-[3/4] by appearance (morphology + MSRT). Location/access: surface numbering recorded; no between-pane parallax. Acceptance: per VIS §6; documentation attached (photo set + forms).
References & Related Links

Informative references and related internal links for context only. Product acceptance remains governed by the applicable project specifications, referenced product standards, and GlassRenu VIS/DSS procedures.

DSS-M.03.04

Edge “Shelling” at Hardware Holes/Slots

DSS-M.03.04
Edge “Shelling” at Hardware Holes/Slots
Mechanical — edge & corner damage at penetrations

Classification & Scope (Normative)

Edge “shelling” at hardware holes/slots is a localized shell-type loss that originates at the perimeter of a drilled hole or machined notch and intrudes onto the exposed face. It is distinct from a factory exit-lip (a uniform burr confined to the hole/slot perimeter that reads SC-0 on the face and is not damage). Classification here is appearance-only per VIS; restoration methodology is out of scope. Inspect under VIS lighting/geometry and record surface numbering and worked-surface status on Forms:

Typical Presentation (Informative)

  • Crescent/shell-shaped losses or ragged “bites” breaking from the hole/slot perimeter onto the face; often brightest in raking light.
  • May include short chip flanks and micro-cracking radiating from the penetration.
  • Common at hardware landings (standoff holes, spider fittings) or notch roots. (Use VIS oblique sweep and raking light.)

Field Identification Cues (Normative)

  • Surface-catch class (MSRT)
  • Expect SC-2 (clear) where shelling intrudes onto the face. Perform one light, non-marring pass only per VIS §5.5; do not abrade or “probe.” Prefer a polymer stylus on suspected coated faces; MSRT supports classification, not acceptance.
  • Visual signature
  • Bright, rough chip flanks at the penetration edge with discrete shell geometry; distinguish from a uniform exit-lip that is edge-confined and SC-0 on the face.
  • Viewing / lighting
  • After Non-Invasive Reveal (clean & dry), evaluate at 12 / 36 / 72 in, normal incidence and oblique sweep (~60°–120°) under raking light.
  • Location / access
  • Record pane ID and surface numbering (#1–#4; laminate-internal) on Forms: If fixed parallax proves a between-pane look-alike or the defect is otherwise inaccessible, record CAT-5 and refer.

Severity & CAT Mapping (Normative)

  • Assign CAT by appearance + MSRT + morphology (three-part cueing under VIS). Depths below are indicative to anchor the spectrum:
  • CAT-2 → low CAT-3 (lower bound): Small, shallow shells just breaking onto the face; SC-1–SC-2; primarily a raking-light cue at close/standard view. Indicative depth: ~10–40 µm.
  • CAT-3 (typical): Pronounced shelling with clear catch and bright, rough chip flanks; noticeable at standard view. Indicative depth: ~40–120 µm.
  • CAT-4 (upper bound): Deep/extended shelling with secondary pits/craters and/or short cracks propagating from the penetration; strong catch; clearly visible at standard & wide-field views. Indicative depth: ~120–300 µm+.
  • CAT-5 (by location/condition): Between-pane/inaccessible or integrity indicators (active cracks, moving pane) → out of in-place scope; document and refer per project protocol.
  • CAT assignment is appearance-based under VIS; acceptance is separate (VIS §6).

Differentiation & Mis-ID Pitfalls (Informative)

  • vs. Factory drill/slot exit-lip (P.03.04): Exit-lip is a uniform burr confined to the hole/slot, reads SC-0 on the face, and shows no chip-flank morphology. Do not classify as damage.
  • vs. Linear scoring (M.01): Scoring forms extended lines across the face; an exit-lip/shelling is peripheral to a hole/slot. If scoring is present, classify under M.01 in addition.
  • vs. Coating anomalies (Co.01/Co.03): Worked-face coating rub/patchiness is disallowed at acceptance on coated faces (VIS §6.2.e); shelling shows fracture morphology at a penetration.

Evidence Package (Documentation Requirements) (Normative)

  1. Photo set (VIS): 12 / 36 / 72 in, normal + oblique, with raking macros of the penetration edge showing chip flanks and at least one context frame proving the condition breaks onto the face (i.e., not just an exit-lip).
  2. MSRT result: Record SC class (SC-0/1/2 as observed). One pass, non-marring; prefer polymer stylus on suspected coated faces.
  3. Forms: Pane ID; product family & surface numbering; worked surface Y/N; functional coating on worked surface? (Y/N/Unknown); reveal status; lighting/time; geometry checklist; photos attached.
  4. Acceptance split: VIS governs post-restoration appearance. Do not conflate a factory exit-lip with face-side acceptance; if a worked region is created, transition edges remain disqualifying at acceptance for CAT-0…CAT-4.

Reporting Language (Template)

  • M.03.04 Edge “Shelling” at Hardware Hole/Slot — Discrete shell-type loss breaking from [hole/slot] perimeter onto the exposed face #___. MSRT = SC-2 (clear) at shell perimeter; bright, rough chip flanks present. Visible at [12/36/72 in] under VIS geometry. Classification: CAT-[3/4] by morphology + MSRT. Differentiation: not a uniform exit-lip (SC-0 on face). Acceptance: per VIS §6; documentation attached (photo set + forms).
References & Related Links

Informative references and related internal links for context only. Product acceptance remains governed by the applicable project specifications, referenced product standards, and GlassRenu VIS/DSS procedures.

M.04

Impact & Contact

DSS-M.04.01

Impact Divot (non-through)

DSS-M.04.01
Impact Divot (non-through)
Mechanical — localized contact/impact; no through-thickness break

Classification & Scope (Normative)

A non-through impact divot is a localized indentation/pit on the exposed surface caused by a blunt contact or small projectile that does not result in a through-thickness crack or star-break. Classification here is appearance-only per VIS (method-agnostic). Inspect under VIS lighting/geometry, after Non-Invasive Reveal, and record surface numbering and worked-surface status on Forms

Typical Presentation (Informative)

  • Single dimple/pit with a bright crater rim in raking light; may show a micro-halo.
  • No radial “star” arms; no through-thickness crack network.
  • Can have fine chip flanks at the rim when severity increases; isolated rather than lane-like.
  • (Use VIS oblique sweep + raking to develop edge contrast.)

Field Identification Cues (Normative)

  • Surface-catch class (MSRT)
  • Expect SC-1 (slight) for shallow dimples; SC-2 (clear) where a defined crater rim/chip flanks are present. Perform one light, non-marring pass only to sense relief; on suspected coated faces, prefer a polymer stylus or rely on visual/location cues. MSRT supports classification, not acceptance.
  • Visual signature
  • Localized pit/crater with bright rim and no continuous lineation; if chip flanks or peppered satellites appear, escalate severity by morphology (see CAT mapping).
  • Viewing / lighting
  • Evaluate clean & dry at 12 / 36 / 72 in, normal incidence and oblique sweep (~60°–120°) under raking light per VIS.
  • Location / access
  • Record pane ID and surface numbering (#1–#4; laminate-internal) on Forms: If fixed parallax proves a between-pane look-alike (e.g., cavity debris mark), classify CAT-5 (out of in-place scope) and refer.

Severity & CAT Mapping (Normative)

  • Assign category by appearance + MSRT + morphology (three-part cueing under VIS). Depth figures below are indicative to anchor the spectrum:
  • CAT-2 (Light): Shallow dimple with SC-1; clean crater edge, no chip flanks; mainly a raking-only cue at close/standard view. Indicative depth: ~10–40 µm.
  • CAT-3 (Moderate): Pronounced pit with SC-2 (clear); minor chip flanks and/or modeled micro-texture around the rim; noticeable at standard view. Indicative depth: ~40–120 µm.
  • CAT-4 (Severe): Deep crater with rough, bright flanks, peppered micro-pits, or adjacent crater field; clearly visible at standard & wide-field views. Indicative depth: ~120–300 µm+.
  • CAT-5 (by location/condition): If integrity indicators are present (active cracks, star-break, moving pane) or the cue is between panes/inaccessible, record CAT-5 and refer.
  • CAT assignment is appearance-based under VIS; acceptance is separate (VIS §6).

Differentiation & Mis-ID Pitfalls (Informative)

  • vs. Hot-particle peppering (Th.01.01/Th.01.02): Thermal peppering forms clusters/fields of fused nodules/pits with very bright flanks; distribution is often speckled rather than a single dimple. Classify under Th.01 when fielded.
  • vs. Pellet/BB impact signature (M.04.03): Pellet/BB strikes tend to present larger divots with micro-radial cracking or subsurface cone; if star-like arms or through-cracking appear, escalate out of this entry and consider CAT-5 by integrity.
  • vs. Open inclusion (“open stone,” P.02.03): An open stone can mimic a crater but relates to a processing inclusion; use MSRT + reveal and look for irregular inclusion boundary vs. clean impact geometry; classify per P.02.03 if confirmed.
  • vs. Linear scoring (M.01): Scoring forms extended lines/tracks with clear catch; an impact divot is localized.

Evidence Package (Documentation Requirements) (Normative)

  1. Photo set (VIS): 12 / 36 / 72 in, normal + oblique; include raking macros of the crater rim and at least one context frame establishing isolation (i.e., not a field of peppering). Record distance/angle in-frame.
  2. MSRT result: Record SC-class (SC-0/1/2) with one light, non-marring pass; polymer stylus preferred on suspected coated faces.
  3. Forms: Pane ID; product family & surface numbering (#1–#4; laminate-internal); worked surface Y/N; functional coating present on worked surface? (Y/N/Unknown); reveal status; lighting/time; geometry checklist; photos attached.
  4. Acceptance split: VIS §6 governs post-restoration appearance; classification ≠ acceptance. Transition edges and coating anomalies remain disqualifying per the applicable acceptance category.

Reporting Language (Template)

  • M.04.01 Impact Divot (non-through) — Localized crater on surface #___ with SC-[1/2] at rim; no radial star or through-crack observed. Visible at [12/36/72 in] under VIS geometry after Non-Invasive Reveal. Classification: CAT-[2/3/4] by morphology + MSRT. Location/access: surface numbering recorded; no between-pane parallax. Acceptance: per VIS §6; documentation attached (photo set + forms).
References & Related Links

Informative references and related internal links for context only. Product acceptance remains governed by the applicable project specifications, referenced product standards, and GlassRenu VIS/DSS procedures.

DSS-M.04.02

Star Break / Bullseye Initiation (annealed/laminated)

DSS-M.04.02
Star Break / Bullseye Initiation (annealed/laminated)
Mechanical — impact-initiated fracture pattern

Classification & Scope (Normative)

Star breaks / bullseye initiations are impact-origin fracture patterns characterized by a central origin with radial and/or circumferential cracking. For annealed or laminated architectural glass, the presence of active cracks or a star-type network constitutes an integrity indicator and is out of in-place restoration scope under VIS (CAT-5). Classification here is appearance-only; methodology is out of scope. Inspect under VIS lighting/geometry and record surface numbering and worked-surface status on Forms:

Typical Presentation (Informative)

  • Central impact origin (may coincide with a small pit/divot) with one or more radial cracks; may show a partial “bullseye” ring in laminated make-ups.
  • No full-lite tempered fragmentation (this entry covers annealed/laminated; tempered spontaneous break/fragmentation is treated elsewhere).
  • Often visible at standard view; raking light highlights the origin and micro-relief at the pit (if present). (Use VIS geometry.)

Field Identification Cues (Normative)

  • Surface-catch class (MSRT)
  • Do not perform MSRT across an open crack network. If needed, a single light, non-marring pass may be used adjacent to the origin only to sense any crater rim (SC-class), but MSRT is auxiliary and never determinative for integrity. One pass only; non-marring; on suspected coated faces, prefer a polymer stylus. MSRT supports classification, not acceptance.
  • Visual signature
  • Radial arms emanating from a point origin; may include a small crater/pit with bright rim in raking light. Any through-thickness or running crack is an integrity indicator.
  • Viewing / lighting
  • Evaluate clean & dry (Non-Invasive Reveal) at 12 / 36 / 72 in, normal incidence and oblique sweep (~60°–120°) with raking light per VIS.
  • Location / access
  • Record pane ID and surface numbering (#1–#4; laminate-internal) on Forms: Use parallax to distinguish face-side vs between-pane/laminate-internal cues; fixed parallax indicates a between-pane condition (CAT-5 by location).

Severity & CAT Mapping (Normative)

  • Assign category by appearance + integrity (three-part cueing applies; VIS):
  • CAT-5 (default for this entry): Active cracks / star or ring network present in annealed or laminated glass → Non-Repairable / Out of Scope for In-Place Restoration. Document and refer per project protocol (e.g., replacement/manufacturer service).
  • Reassign only if no cracking is present: If examination confirms no cracks and only a localized pit/divot exists, classify under M.04.01 Impact Divot (CAT-2/3/4 by morphology + MSRT).
  • CAT assignment is appearance/condition-based; acceptance is separate (VIS §6).

Differentiation & Mis-ID Pitfalls (Informative)

  • vs. Impact divot (M.04.01): A divot shows a localized crater rim without a radial crack network. Any running/radial arm(s) → this entry (CAT-5).
  • vs. Pellet/BB impact signature (M.04.03): Pellet strikes on annealed/laminated often initiate star patterns; if cracks are present, treat as CAT-5 by integrity.
  • vs. Internal inclusion/laminate feature (A-family): Use parallax and surface numbering to avoid misclassifying laminate-internal artifacts; laminate-internal = CAT-5 by location (out of in-place scope).
  • vs. Coating anomalies (Co-family): Coating rub/patchiness lacks fracture arms and is governed by VIS coating acceptance; do not conflate with star-type cracking.

Evidence Package (Documentation Requirements) (Normative)

  1. Photo set (VIS): 12 / 36 / 72 in, normal + oblique, include raking macros of the origin and arms; at least one context frame showing pane edges/corners and no worked transition edge. Record distance/angle in-frame.
  2. MSRT result: If a crater is present, you may record SC-class adjacent to the origin without crossing cracks; one light, non-marring pass only; polymer stylus on suspected coated faces. MSRT is supportive, not determinative.
  3. Forms: Pane ID; product family & surface numbering; worked surface Y/N; functional coating on worked surface? (Y/N/Unknown); reveal status; lighting/time; geometry checklist; photos attached.
  4. Acceptance split: VIS §6 governs post-restoration appearance; classification ≠ acceptance. Integrity indicators (e.g., star breaks) place the lite out of in-place acceptance (CAT-5).

Reporting Language (Template)

  • M.04.02 Star Break / Bullseye Initiation (annealed/laminated) — Impact-origin fracture pattern with radial arm(s) observed on surface #___; integrity indicator present. MSRT not performed across cracks; if performed adjacent to origin, SC-[ ] recorded. Visible at [12/36/72 in] under VIS geometry after Non-Invasive Reveal. Classification: CAT-5 (out of in-place scope). Location/access: surface numbering recorded; parallax checked. Acceptance: per VIS §6; documentation attached (photo set + forms).
References & Related Links

Informative references and related internal links for context only. Product acceptance remains governed by the applicable project specifications, referenced product standards, and GlassRenu VIS/DSS procedures.

DSS-M.04.03

Pellet / BB Impact Signature

DSS-M.04.03
Pellet / BB Impact Signature
Mechanical — high-velocity localized impact

Classification & Scope (Normative)

A pellet/BB impact is a high-velocity, localized strike that produces a central crater/divot and may initiate radial cracking or a bullseye/star pattern depending on glass type and energy. Classification here is appearance-only per VIS (method-agnostic). Inspect under VIS lighting/geometry, after Non-Invasive Reveal, and record surface numbering and worked-surface status on Forms: Active cracks/star networks are integrity indicators → CAT-5 (out of in-place scope).

Typical Presentation (Informative)

  • Central impact crater with a bright rim; may show peppered satellites near the origin.
  • On annealed/laminated, can present radial arms / partial bullseye; on tempered, may show local spall or escalate to full fragmentation (document separately if so).
  • Distinct from hot-particle fields by its singular origin and impact geometry (not distributed speckling). Use raking light + oblique sweep to develop edge contrast.

Field Identification Cues (Normative)

  • Surface-catch class (MSRT)
  • Shallow pellets may read SC-1 (slight); pronounced craters show SC-2 (clear) at the rim. Perform one light, non-marring pass only; polymer stylus preferred on suspected coated faces. MSRT supports classification, not acceptance.
  • Visual signature
  • Localized pit/crater with bright, rough flanks; if radial arms or a running crack are present, treat as integrity (see CAT mapping).
  • Viewing / lighting
  • Evaluate clean & dry at 12 / 36 / 72 in, normal incidence and oblique sweep (~60°–120°) with raking light per VIS.
  • Location / access
  • Record pane ID and surface numbering (#1–#4; laminate-internal). Use parallax to rule out between-pane look-alikes (e.g., cavity fines/marks); fixed parallax indicates a between-pane condition (CAT-5 by location).

Severity & CAT Mapping (Normative)

  • Assign category by appearance + MSRT + morphology (three-part cueing under VIS). Depth figures are indicative to anchor the spectrum:
  • CAT-2 (Light): Small crater with SC-1, clean rim, no chip flanks, no cracks; mainly a raking-only cue at close/standard view. Indicative depth: ~10–40 µm.
  • CAT-3 (Moderate): Pronounced crater with SC-2 (clear); minor chip flanks and/or nearby modeled micro-texture; noticeable at standard view; no cracks. Indicative depth: ~40–120 µm.
  • CAT-4 (Severe): Deep crater with rough, bright flanks, peppered satellites; clearly visible at standard & wide-field views; no cracks. Indicative depth: ~120–300 µm+.
  • CAT-5 (by integrity/location): Any radial/star cracking, running edge crack, or moving pane → CAT-5 (non-repairable/out of in-place scope). Between-pane presentation by fixed parallax → CAT-5 by location. Document and refer per project protocol.
  • CAT assignment is appearance/condition-based; acceptance is separate (VIS §6).

Differentiation & Mis-ID Pitfalls (Informative)

  • vs. Impact divot (M.04.01): A simple divot lacks radial arms and often has smaller, cleaner rims; pellet strikes trend larger energy, may show satellite pits or incipient cracking—if cracks present → CAT-5.
  • vs. Star break/bullseye initiation (M.04.02): If star network is evident, classify under M.04.02 (default CAT-5 by integrity).
  • vs. Hot-particle peppering (Th.01.01/Th.01.02): Thermal/ferrous peppering forms distributed fields of fused nodules/pits (often in clusters) rather than a singular impact origin; peppering commonly reads as rough chip-like flanks/fused particles and is mapped under thermal entries.
  • vs. Internal cavity artifacts (A-family): Desiccant fines/moisture/haze present between panes and show fixed parallax; do not respond to reveal on #1/#4. Treat as CAT-5 by location.

Evidence Package (Documentation Requirements) (Normative)

  1. Photo set (VIS): 12 / 36 / 72 in, normal + oblique, include raking macros of the crater rim (and any satellites) and at least one context frame showing proximity to edges/hardware; record distance/angle in-frame.
  2. MSRT result: Record SC-class (SC-0/1/2) with one light, non-marring pass at the rim (not across any cracks). Prefer polymer stylus on suspected coated faces.
  3. Forms: Pane ID; product family & surface numbering (#1–#4; laminate-internal); worked surface Y/N; functional coating on worked surface? (Y/N/Unknown); reveal status; lighting/time; geometry checklist; photos attached.
  4. Acceptance split: VIS §6 governs post-restoration appearance; classification ≠ acceptance. Transition edges, residual pits, embedded particulates, and coating anomalies on coated faces remain disqualifying per the applicable acceptance category.

Reporting Language (Template)

  • M.04.03 Pellet/BB Impact — Localized crater on surface #___ with SC-[1/2] at rim; [no radial cracking / radial arm(s) present]. Visible at [12/36/72 in] under VIS geometry after Non-Invasive Reveal. Classification: CAT-[2/3/4] by morphology + MSRT; if cracking present → CAT-5 (integrity). Location/access: surface numbering recorded; parallax checked. Acceptance: per VIS §6; documentation attached (photo set + forms).
References & Related Links

Informative references and related internal links for context only. Product acceptance remains governed by the applicable project specifications, referenced product standards, and GlassRenu VIS/DSS procedures.

DSS-M.04.04

Tool Strike / Ladder Foot Imprint

DSS-M.04.04
Tool Strike / Ladder Foot Imprint
Mechanical — localized contact/press/drag imprint; may include abrasion + transfer

Classification & Scope (Normative)

A tool strike / ladder foot imprint is a localized contact mark on the exposed surface produced by pressed/dragged equipment (e.g., ladder feet, tool bodies, scaffold components). It may present as rectilinear pad outlines, paired tread prints, or blunted arcs consistent with press-and-slide. Classification is appearance-only per VIS (method-agnostic). Inspect under VIS lighting/geometry after Non-Invasive Reveal; record surface numbering and worked-surface status on Forms:

Typical Presentation (Informative)

  • Rectangular or paired pad geometry; sometimes a short slide trail downstream of the initial contact.
  • Two components are common: (a) rubber/plastic transfer film and (b) micro-abrasion/scuff from entrained grit.
  • Raking light reveals directional micro-texture and, at higher severities, bright chip-flank sparkles at the leading edge. (Use VIS oblique sweep + raking.)

Field Identification Cues (Normative)

  • Surface-catch class (MSRT)
  • Transfer only: typically SC-0 (no catch).
  • Scuff/abrasion present: SC-1 (slight) up to SC-2 (clear) along leading edges or grit tracks. Perform one light, non-marring pass only; prefer polymer stylus on suspected coated faces; MSRT supports classification, not acceptance.
  • Visual signature
  • Pad outline/tread geometry plus directional micro-lines in the motion direction; raking macros show clean vs. chipped flanks. If the mark vanishes after reveal, treat as residue (not damage) and reclassify per VIS.
  • Viewing / lighting
  • Evaluate clean & dry at 12 / 36 / 72 in, normal incidence and oblique sweep (~60°–120°) with raking light per VIS.
  • Location / access
  • Log pane ID and surface numbering (#1–#4; laminate-internal) on Forms: If fixed parallax proves a between-pane look-alike (e.g., mark inside an IGU), classify CAT-5 (out of in-place scope) and refer.

Severity & CAT Mapping (Normative)

  • Assign CAT by appearance + MSRT + morphology (three-part cueing under VIS). Depth figures are indicative to anchor the spectrum:
  • CAT-2 (Light): Transfer film with minimal micro-abrasion; SC-0 to SC-1; edges clean, no chip flanks; mainly a raking-only cue at close/standard view. Indicative depth: ~10–40 µm.
  • CAT-3 (Moderate): Pronounced scuff with SC-2 (clear) along the lead; minor chip flanks / modeled micro-texture; noticeable at standard view. Indicative depth: ~40–120 µm.
  • CAT-4 (Severe): Deep abrasion lane and/or peppered pits/craters from entrained grit; rough, bright flanks; clear at standard & wide-field views. Indicative depth: ~120–300 µm+.
  • CAT-5 (by location/condition): Between-pane/inaccessible by parallax, or integrity indicators (active cracks, pane movement) → CAT-5 (out of in-place scope).
  • CAT assignment is appearance-based; acceptance is separate (VIS §6). Do not use MSRT to “probe” or alter surfaces.

Differentiation & Mis-ID Pitfalls (Informative)

  • vs. Rubber/plastic transfer (Residues R.05): If reveal removes the mark and MSRT = SC-0, classify as residue/transfer, not surface damage. Retain photos and reclassify per VIS.
  • vs. Linear scoring (M.01): Scoring forms long, continuous lines/tracks; ladder/tool imprints are localized pad geometries with short directional scuff. If long tracks exist, add an M.01 entry.
  • vs. Hot-particle peppering (Th.01): Thermal peppering shows distributed fused nodules/pits, not pad geometry; classify under Th.01 when fielded.
  • vs. Coating anomaly (Co-family): Coating rub/patchiness lacks chip-flank fracture morphology and is governed by VIS coating acceptance (no anomalies allowed on the worked coated surface).

Evidence Package (Documentation Requirements) (Normative)

  1. Photo set (VIS): 12 / 36 / 72 in, normal + oblique, include raking macros of the leading edge (to show chip-flank status) and at least one context frame showing pad/tread geometry. Record distance/angle in-frame.
  2. MSRT result: Record SC class (SC-0/1/2) with one light, non-marring pass; polymer stylus on suspected coated faces. MSRT is supportive only.
  3. Forms: Pane ID; product family & surface numbering (#1–#4; laminate-internal); worked surface Y/N; functional coating present on worked surface? (Y/N/Unknown); reveal status; lighting/time; geometry checklist; photos attached.
  4. Acceptance split: VIS §6 governs post-restoration appearance; classification ≠ acceptance. Transition edges and coating anomalies remain disqualifying per category criteria.

Reporting Language (Template)

  • M.04.04 Tool Strike / Ladder Foot Imprint — Localized pad/tread geometry with directional scuff on surface #___; MSRT = SC-[0/1/2] at leading edge; [no/yes] chip flanks visible in raking macro. Visible at [12/36/72 in] under VIS geometry after Non-Invasive Reveal. Classification: CAT-[2/3/4] by morphology + MSRT; if between-pane/integrity → CAT-5. Location/access: surface numbering recorded; parallax checked. Acceptance: per VIS §6; documentation attached (forms + photo set).
References & Related Links

Informative references and related internal links for context only. Product acceptance remains governed by the applicable project specifications, referenced product standards, and GlassRenu VIS/DSS procedures.

DSS-M.04.05

Hardware Contact Rub (spider/rail fittings)

DSS-M.04.05
Hardware Contact Rub (spider/rail fittings)
Mechanical — localized abrasion + possible metallic transfer adjacent to hardware

Classification & Scope (Normative)

A hardware contact rub is a localized surface scuff/abrasion (often with metallic transfer) produced where point-supported fittings (e.g., spider arms, standoff discs) or rail clamps/brackets contact or are dragged across the lite. Classification here is appearance-only per VIS (method-agnostic). Inspect after Non-Invasive Reveal and under VIS lighting/geometry; record surface numbering and worked-surface status on Forms:

Typical Presentation (Informative)

  • Crescent or annular scuff concentric with a fitting disc, or short arcuate/linear rubs emanating from a clamp or spider arm.
  • Grey/black metallic smear (aluminum/steel transfer) may overlie fine micro-abrasion; raking light shows directional texture and, at higher severities, bright chip-flank sparkles at the leading edge.
  • Often localized to hardware quadrants/holes/edge-adjacent areas rather than pane-wide. (Use VIS oblique sweep + raking to develop edge contrast.)

Field Identification Cues (Normative)

  • Surface-catch class (MSRT)
  • Transfer-dominated: frequently SC-0 (no catch).
  • Abrasion present: SC-1 (slight) up to SC-2 (clear) at the rub’s leading edge. Perform one light, non-marring pass only; polymer stylus on suspected coated faces. MSRT supports classification, not acceptance.
  • Visual signature
  • Hardware-shaped geometry (ring/crescent/short arc near fitting) with directional micro-lines; transfer films may overlay abrasion. If the cue disappears after reveal, classify as residue/transfer (not damage) per VIS and reassign accordingly.
  • Viewing / lighting
  • Evaluate clean & dry at 12 / 36 / 72 in, normal incidence and oblique sweep (~60°–120°) with raking light per VIS.
  • Location / access
  • Log pane ID and surface numbering (#1–#4; laminate-internal) on Forms: If fixed parallax demonstrates a between-pane look-alike (e.g., clamp impression inside an IGU), classify CAT-5 (out of in-place scope) and refer.
  • Coatings
  • Where the worked surface is coated, no coating anomaly is permitted at acceptance; treat any sheen/color/patchiness on a coated worked face as disqualifying under VIS §6.2.e.

Severity & CAT Mapping (Normative)

  • Assign CAT by appearance + MSRT + morphology (three-part cueing under VIS). Depth figures are indicative to anchor the spectrum:
  • CAT-2 (Light): Transfer film with minimal micro-abrasion; SC-0 to SC-1; clean edges, no chip flanks; mainly a raking-only cue at close/standard view. Indicative depth: ~10–40 µm.
  • CAT-3 (Moderate): Pronounced scuff with SC-2 (clear) along the lead; minor chip flanks / modeled micro-texture; noticeable at standard view. Indicative depth: ~40–120 µm.
  • CAT-4 (Severe): Deep abrasion lane and/or peppered pits/craters from entrained grit; rough, bright flanks; clear at standard & wide-field views. Indicative depth: ~120–300 µm+.
  • CAT-5 (by location/condition): Between-pane/inaccessible by parallax or integrity indicators (active cracks, pane movement) → CAT-5 (out of in-place scope).
  • CAT assignment is appearance-based; acceptance is separate (VIS §6). Do not use MSRT to “probe” or alter surfaces.

Differentiation & Mis-ID Pitfalls (Informative)

  • vs. Rubber/plastic transfer (R.05): If reveal removes the mark and MSRT = SC-0, treat as residue, not surface damage; reclassify per VIS.
  • vs. Linear scoring (M.01): Scoring forms long, continuous tracks; hardware rubs are localized rings/crescents or short arcs near fittings. Escalate to M.01 if extended lanes are present.
  • vs. Coating anomaly (Co-family): Coating rub/patchiness lacks chip-flank fracture morphology and is not permitted on a coated worked surface at acceptance (VIS §6.2.e).
  • vs. Internal cavity artifacts (A-family): Desiccant fines/moisture/haze present between panes with fixed parallax; not responsive to reveal on #1/#4 → CAT-5 by location.

Evidence Package (Documentation Requirements) (Normative)

  1. Photo set (VIS) 12 / 36 / 72 in, normal + oblique, include raking macros of the leading edge (to show chip-flank status) and at least one context frame showing the hardware geometry/proximity. Record distance/angle in-frame.
  2. MSRT result Record SC-class (SC-0/1/2) with one light, non-marring pass; polymer stylus on suspected coated faces. MSRT is supportive only.
  3. Forms Pane ID; product family & surface numbering (#1–#4; laminate-internal); worked surface Y/N; functional coating on worked surface? (Y/N/Unknown); reveal status; lighting/time; geometry checklist; photos attached.
  4. Acceptance split VIS §6 governs post-restoration appearance; classification ≠ acceptance. Coating anomalies and visible transition edges/directional patterning remain disqualifying per category criteria.

Reporting Language (Template)

  • M.04.05 Hardware Contact Rub — Localized ring/crescent scuff adjacent to [spider fitting / rail clamp] on surface #___; MSRT = SC-[0/1/2] at leading edge; [no/yes] chip flanks in raking macro. Visible at [12/36/72 in] under VIS geometry after Non-Invasive Reveal. Classification: CAT-[2/3/4] by morphology + MSRT; if between-pane/integrity → CAT-5. Location/access: surface numbering recorded; parallax checked. Acceptance: per VIS §6; documentation attached (forms + photo set).
References & Related Links

Informative references and related internal links for context only. Product acceptance remains governed by the applicable project specifications, referenced product standards, and GlassRenu VIS/DSS procedures.

M.05

Fabrication Debris (FD) Scratches

DSS-M.05.01

Short FD Scratch Cluster

DSS-M.05.01
Short FD Scratch Cluster
Mechanical — factory handling/wash-induced; multiple short, parallel lineations

Classification & Scope (Normative)

A short FD scratch cluster is a localized patch (typically hand-sized or smaller) of multiple short, generally parallel fine scratches produced by entrained grit/debris during factory washing/handling. Lines are co-oriented, often confined to a narrow zone, and persist after Non-Invasive Reveal. Classification is appearance-only per VIS (method-agnostic). Inspect after Non-Invasive Reveal using VIS lighting/geometry and record surface numbering and worked-surface status on Forms:

Typical Presentation (Informative)

  • Tight patch of short, parallel or slightly fanned lines (mm to cm length), often one orientation.
  • Strongest in raking light; at higher severity, edges show micro-chipping (“chip flanks”) with bright sparkle.
  • Often near wash flow paths or handling lanes; no continuous long tracks across the lite (distinguishes from M.01 tracks).

Field Identification Cues (Normative)

  • Surface-catch class (MSRT)
  • Light clusters: SC-1 (slight); pronounced clusters: SC-2 (clear) where chip flanks are present. Perform one light, non-marring pass only; polymer stylus on suspected coated faces. MSRT supports classification, not acceptance.
  • Visual signature
  • Multiple short, co-oriented scratches within a compact area; no long, continuous lane. Look for consistent stroke width and fine debris satellites.
  • Viewing / lighting
  • Evaluate clean & dry at 12 / 36 / 72 in, normal incidence + oblique sweep (~60°–120°) with raking light; record distances/angles in-frame.
  • Location / access
  • Confirm on the exposed face. Use parallax in IGUs—fixed parallax indicates between-pane → CAT-5 by location. Record surface numbering #1–#4 / laminate-internal on Forms:

Severity & CAT Mapping (Normative)

  • Assign CAT by appearance + MSRT + morphology (three-part cueing under VIS). Depths below are indicative to anchor the spectrum:
  • CAT-2 (Light): Fine, shallow lines; SC-1, clean edges, no chip flanks; mainly a raking-only cue at close/standard view. Indicative depth: ~0.2–1 μm.
  • CAT-3 (Moderate): Clear catch (SC-2) on representative lines; minor chip flanks and/or modeled micro-texture; noticeable at standard view. Indicative depth: ~1–5 μm.
  • CAT-4 (Severe): Rough, bright chip flanks, peppered pits/craters, or broad matte sectors within the cluster; distinct at standard & wide-field views. Indicative depth: ≥5 μm.
  • CAT-5 (by location/condition): Between-pane/inaccessible by parallax, or integrity indicators (active cracks, moving pane) → CAT-5; document and refer.
  • CAT assignment is appearance-based; acceptance is separate (VIS §6). Do not use MSRT to “probe.”

Differentiation & Mis-ID Pitfalls (Informative)

  • vs. Linear scoring / tracks (M.01): M.01 shows extended, continuous lines (sometimes pane-spanning); FD clusters are localized with short lineations.
  • vs. Micro-abrasion swirls / pad trails (M.02.01): Swirls are looped/curvilinear; FD clusters are straight, co-oriented lines.
  • vs. Residue films/overspray (R-family): Residues change with reveal and read SC-0; true FD lines persist and can read SC-1/SC-2.
  • vs. Coating anomalies (Co-family): Coating rub/patchiness is area-based, typically SC-0/SC-1 and lacks chip flanks; visible anomalies on a worked coated surface are not permitted at acceptance.

Evidence Package (Documentation Requirements) (Normative)

  1. Photo set (VIS): 12 / 36 / 72 in, normal + oblique, include raking macros that resolve individual line edges (confirm presence/absence of chip flanks) and at least one context frame showing the cluster’s confinement (not pane-spanning). Record distance/angle in-frame.
  2. MSRT result: Record SC class (SC-0/1/2) with one light, non-marring pass on a representative line; polymer stylus on suspected coated faces. MSRT is supportive only.
  3. Forms: Pane ID; product family & surface numbering (#1–#4; laminate-internal); worked surface Y/N; functional coating on worked surface? (Y/N/Unknown); reveal status; lighting/time; geometry checklist; photos attached.
  4. Acceptance split: VIS §6 governs post-restoration appearance; classification ≠ acceptance. Transition edges and coating anomalies remain disqualifying per category criteria.

Reporting Language (Template)

  • M.05.01 FD Scratch Cluster — Short (localized). Hand-sized patch of short, co-oriented fine lines on surface #___; MSRT = SC-[1/2] on representative lines; chip flanks [absent/present]. Visible at [12/36/72 in] under VIS geometry after Non-Invasive Reveal. Classification: CAT-[2/3/4] by morphology + MSRT; if between-pane/inaccessible → CAT-5. Forms + photo set completed per VIS.
References & Related Links

Informative references and related internal links for context only. Product acceptance remains governed by the applicable project specifications, referenced product standards, and GlassRenu VIS/DSS procedures.

DSS-M.05.02

Long FD Scratch Field

DSS-M.05.02
Long FD Scratch Field
Mechanical — Fabrication Debris Scratches

Definition (Normative)

Pane-scale, predominantly parallel lineations caused by trapped/dragged fabrication debris during washing/handling, typically extending across large regions (often banded) rather than isolated short clusters. Classified by visual morphology and surface-catch response; methods of removal are outside scope.

Typical Presentation (Informative)

  • Repeating, co-directional lines that traverse much of the lite; banding may correlate to wash/transport path.
  • Read strongly in raking/oblique views; individual lines may vary in intensity along a common path.
  • Often coexists with short FD clusters near starts/stops or edge lands. (Family placement in DSS index confirms this damage class.)

Field Identification Cues (Normative)

  • Surface-catch class (MSRT): SC-1 to SC-2 typical; escalate to SC-3 when bright chip flanks/pitting accompany lines. Perform one light, non-marring pass per VIS §5.5; prefer polymer stylus on suspected coated faces.
  • Visual signature: Long-run, near-parallel scoring that forms fields/bands rather than a single track; localized bright “edge sparkle” under raking light indicates increasing depth. Evaluate at 12/36/72 in, normal + oblique sweep under raking light.
  • Location/access: Record pane ID and surface numbering (#1–#4; laminate-internal). If fixed parallax shows the cue is between panes, classify CAT-5 (out-of-place scope).

Classification Mapping (to VIS-DA) (Normative)

  • CAT-2 (Light): SC-1; narrow, clean-edged lines; limited impact at standard view.
  • CAT-3 (Moderate): SC-2–SC-3; clear catch; minor chip flanks may appear; noticeable at standard view.
  • CAT-4 (Severe): SC-3 with pronounced chip flanks, crater-pepper, or dense banding evident at wide-field views.
  • CAT-5: Use only when location/condition places the defect out of in-place scope (e.g., IGU cavity). Acceptance of restored glass is governed separately by VIS §6; do not conflate classification with acceptance.

Indicative Depth / Relief (Informative)

  • Depth ranges are illustrative, used to align with CAT and morphology (numeric measurement not required for classification):
  • CAT-2: ~0.2–1 µm (shallow, clean-edged; SC-1).
  • CAT-3: ~1–5 µm (clear catch; emerging chip flanks).
  • CAT-4: ≥5 µm (rough chip flanks; possible pit/crater association). Use MSRT class + morphology as the primary cues; numeric depth is not required.

Differentiation & False Positives (Informative)

  • vs. Cutting skid lines (factory, edge-zone): Skid lines are short, edge-confined micro-lines; FD fields are long-run, pane-face bands that may escalate in catch.
  • vs. Linear tracks (M.01): Single scraper/straightedge tracks present as one or a few distinct lines with consistent direction; FD fields present as many near-parallel lines forming bands. (See DSS index family separation.)
  • vs. Abrasion fields (M.02): Abrasion fields show webbing/swirls and broader texture; FD fields are dominantly linear/parallel.

Evidence Package — Documentation Requirements (Normative)

  1. Photo set (VIS): 12 / 36 / 72 in, normal + oblique (~60°–120°); include raking-light frames. Capture a context frame showing band extent and at least one macro of line edges/chip flanks.
  2. MSRT result: Record SC class (one pass, non-marring; polymer stylus on suspected coated faces).
  3. Forms: Pane ID; surface numbering; worked-surface Y/N; “coating present on worked surface?” Y/N/Unknown; reveal status; lighting/time; geometry checklist.

Mis-ID Pitfalls (Informative)

  • Attempting spot-work across a distributed FD field can create visible transition edges; VIS disallows visible worked boundaries in acceptance (CAT-0…CAT-4). Keep classification appearance-only; acceptance is evaluated under VIS §6.

Reporting Language (Template)

  • M.05.02 Long FD Scratch Field — Pane-scale bands of near-parallel lineations observed at VIS geometry; MSRT = SC-x (record value). Long-run morphology with [chip-flank status]. Classified CAT-y by cues. Pane ID, surface #, and photo set attached; acceptance per VIS §6 (separate determination).
References & Related Links

Informative references and related internal links for context only. Product acceptance remains governed by the applicable project specifications, referenced product standards, and GlassRenu VIS/DSS procedures.

DSS-M.05.03

Wash-Line Scratch Bands

DSS-M.05.03
Wash-Line Scratch Bands
Fabrication Debris / factory wash handling lines

Definition (Normative)

Parallel, height-consistent bands of linear surface scoring produced when particulates or trapped fines are carried across the lite by factory washing/handling equipment prior to or after heat-treating. Bands typically align perpendicular to glass travel and traverse significant widths of the face. Classification is appearance-based under VIS inspection conditions; acceptance is governed separately by VIS-A. Use VIS inspection geometry and documentation conventions.

Typical Presentation (Informative)

  • Parallel stripes/belts of fine to moderate scratches at repeatable elevations across adjacent lites from the same batch/run.
  • Lines read strongest in raking light; at standard view, bands may collapse into a faint “striped haze” when shallow.
  • Often span long distances, intersecting mullion reflections; individual lines within a band can vary in prominence.
  • May co-occur with other FD manifestations (e.g., long FD fields) on the same elevation.

Field Identification Cues (Normative)

  • MSRT (Manual Surface-Relief Test) class — one light, non-marring pass only:
  • SC-1 (slight) for shallow band sets;
  • SC-2 (clear) where chip flanks are present on stronger lines.
  • Numeric depth is not required for classification; prioritize MSRT class + morphology.
  • Visual signature — multiple, co-planar lines forming a belt; some lines show clean edges, others exhibit micro-chipping/chip flanks under raking light. (Use VIS §5 lighting/geometry.)
  • Viewing & lighting — Capture at 12 / 36 / 72 in; normal + oblique sweep; include raking-light frames. Surfaces clean/dry per VIS “Non-Invasive Reveal.”
  • Location / access — Present on the exposed face being evaluated. Where fixed parallax proves a between-pane condition, classify CAT-5 (out of in-place scope) and refer per project protocol.
  • Severity & Category Mapping (Normative)
  • (Informative micrometer ranges are for context; classification does not require measurement.)
  • Cue set
  • Typical CAT
  • Indicative depth band (µm)
  • Notes
  • SC-1, clean-edged fine lines; bands faint at 36 in
  • CAT-2 (Light)
  • ~0.5–2 µm
  • Shallow relief, minimal chip flanks; often collapses to faint haze at standard view.
  • SC-2, clear catch; intermittent micro-chipping along primary lines; distinct at 36 in
  • CAT-3 (Moderate)
  • ~2–10 µm
  • Bright edge sparkle in raking light; multiple lines per band.
  • SC-2, pronounced chip flanks/crater specks within bands; distinct at wide-field
  • CAT-4 (Severe)
  • ~10–50+ µm
  • Rough flanks; occasional embedded fines; may be visible at 72 in.

Differentiation & False Positives (Informative)

  • vs. Long FD scratch field (M.05.02) — fields may wander; wash-line bands are elevation-consistent, often repeating across lites. (M.05 indexing.)
  • vs. Conveyor/belt line scoring (M.01.04) — M.01.04 typically produces one or a few straight, travel-aligned tracks; wash-line bands present as stacked belts of lines at a set height.
  • vs. Squeegee burn lines (M.02.05) — squeegee burns are friction films (haze) with SC-0 to SC-1 and no chip flanks; wash-line bands show line relief and may present chip flanks.
  • vs. Coating rub/patchiness (Co.01/Co.03) — coating anomalies are worked-surface appearance changes and are not permitted at acceptance on coated faces; wash-line bands are mechanical lineations in the glass surface. Apply VIS §6.2.e where coatings are involved.
  • vs. Factory optical features (e.g., roller wave, ream/cord) — optical features are pane-scale, SC-0, and lack line relief/chip flanks; do not spot-work factory optical patterns per VIS.

Evidence Package (Documentation Requirements) (Normative)

  1. Photo set (VIS): 12/36/72 in; normal + oblique; include raking. Capture at least one context frame across adjacent lites to show height-repeat and one macro with chip-flank detail.
  2. MSRT result: Record SC-class (SC-1 / SC-2). Single non-marring pass; on suspected coated faces, prefer polymer stylus.
  3. Forms/Logs: Pane ID; surface numbering; worked surface Y/N; functional coating present on worked surface? (Y/N/Unknown); reveal status; lighting/time; geometry checklist.
  4. Scope split: Classification under VIS-DA (this DSS); post-restoration acceptance under VIS-A—do not conflate factory features with acceptance criteria.

Mis-ID Pitfalls (Informative)

  • Treating band haze as a film only (R-series) and skipping MSRT—misses line relief and chip flanks diagnostic of FD.
  • Attempting localized “spot-buffs” that create a transition edge; VIS disallows visible worked boundaries at acceptance.

Reporting Language (Template)

  • M.05.03 Wash-Line Scratch Bands — Parallel, elevation-consistent bands of linear scoring observed under VIS geometry; MSRT = SC-1/SC-2 with chip-flank morphology on primary lines. Classified CAT-2 / CAT-3 / CAT-4 by cue set as documented. If fixed parallax indicates a between-pane condition, record CAT-5 and refer per project protocol.
References & Related Links

Informative references and related internal links for context only. Product acceptance remains governed by the applicable project specifications, referenced product standards, and GlassRenu VIS/DSS procedures.

M.06

Drilling/Notching‑Related

DSS-M.06.01

Hole Edge Micro-Chips (excess)

DSS-M.06.01
Hole Edge Micro-Chips (excess)
Mechanical — drilling/notching-related; perimeter of penetrations

Classification & Scope (Normative)

Hole edge micro-chips (excess) are small, discrete chiplets at the perimeter of a drilled hole or machined slot that exceed normal manufacturing artifacts and/or intrude onto the exposed face. They present as bright faceted nicks; at higher severities, short chip flanks point inward from the perimeter. Classification is appearance-only per VIS (method-agnostic). Inspect under VIS lighting/geometry after Non-Invasive Reveal; record surface numbering and worked-surface status on Forms:

Typical Presentation (Informative)

  • Scattered pin-to sub-mm chips around a hole/slot, often biased to the exit side of drilling.
  • Bright, sparkly facets in raking light; some chips may just kiss the face (minimal intrusion), others show tiny flanks.
  • Can be symmetric (ring) or quadrant-heavy (tool exit vector); distinct from a uniform exit-lip burr.

Field Identification Cues (Normative)

  • Surface-catch class (MSRT)
  • Chips confined to the perimeter edge (no face intrusion): typically SC-0 at the face.
  • Chips that break onto the face: SC-1 (slight) to SC-2 (clear) on a light, single non-marring pass. Prefer polymer stylus on suspected coated faces; MSRT supports classification, not acceptance.
  • Visual signature
  • Discrete, faceted nicks; at escalation, rough micro-flanks and occasional peppered micro-pits adjacent to the perimeter.
  • Distinguish from uniform exit-lip (continuous edge burr, face SC-0) and from gross shelling (M.03.04).
  • Viewing / lighting
  • Evaluate clean & dry at 12 / 36 / 72 in, both normal incidence and oblique sweep (~60°–120°) with raking light.
  • Location / access
  • Log pane ID and surface numbering (#1–#4; laminate-internal). If fixed parallax shows a between-pane look-alike or the cue is otherwise inaccessible, record CAT-5 (out of in-place scope) and refer per protocol.

Severity & CAT Mapping (Normative)

  • Assign CAT by appearance + MSRT + morphology (three-part cueing under VIS). Depth bands are indicative only—numeric measurement is not required.
  • CAT-2 (Light): Few shallow micro-chips; SC-1 at intrusions; clean edges, no pronounced chip flanks; primarily a raking-only cue at close/standard view. Indicative depth: ~10–40 µm.
  • CAT-3 (Moderate): More numerous chips with SC-2 (clear); minor chip flanks and occasional pepper; noticeable at standard view. Indicative depth: ~40–120 µm.
  • CAT-4 (Severe): Dense ring/coalescing losses with rough, bright flanks, peppered pits, or incipient spalls; visible at standard & wide-field views. Indicative depth: ~120–300 µm+.
  • CAT-5 (by location/condition): Through-thickness/running cracks, pane movement, or between-pane/inaccessible location → CAT-5 (non-repairable/out of in-place scope); document and refer.
  • CAT assignment is appearance-based; acceptance is separate (VIS §6). Do not “probe” with MSRT.

Differentiation & Mis-ID Pitfalls (Informative)

  • vs. Factory exit-lip (P.03.04): Exit-lip is a continuous burr confined to the hole/slot; face reads SC-0 and no discrete bright facets. Do not classify as damage.
  • vs. Edge “shelling” at holes/slots (M.03.04): Shelling shows larger, crescent spalls breaking onto the face with clear flanks; micro-chips are small, discrete.
  • vs. Linear scoring (M.01): Scoring forms extended tracks; hole-edge micro-chips are peripheral and localized.
  • vs. Coating anomalies (Co-family): Coating rub/patchiness lacks fracture facets; on a coated worked surface any anomaly is not permitted at acceptance (VIS §6.2.e).

Evidence Package (Documentation Requirements) (Normative)

  1. Photo set (VIS): 12 / 36 / 72 in; normal + oblique; include raking macros of representative micro-chips (resolve facet/flare) and at least one context frame showing the hole/slot geometry and whether chips break onto the face. Record distance/angle in-frame.
  2. MSRT result: Record SC-class (SC-0/1/2) with one light, non-marring pass on a representative chip that intrudes onto the face; polymer stylus on suspected coated faces.
  3. Forms: Pane ID; product family & surface numbering; worked surface Y/N; functional coating present on worked surface? (Y/N/Unknown); reveal status; lighting/time; geometry checklist; photos attached.
  4. Acceptance split: Post-restoration acceptance follows VIS §6 at 12/36/72 in; classification ≠ acceptance. Visible transition edges, chip-flank texture, and coating anomalies on coated faces remain disqualifying per category criteria.

Reporting Language (Template)

  • M.06.01 Hole Edge Micro-Chips (excess) — Discrete bright micro-chips at [hole/slot] perimeter on surface #___; [intrusion onto face: yes/no]. MSRT = SC-[0/1/2] on representative intrusion; [no/yes] chip flanks in raking macro. Visible at [12/36/72 in] under VIS geometry after Non-Invasive Reveal. Classification: CAT-[2/3/4] by morphology + MSRT; if cracks/between-pane → CAT-5. Forms + photo set completed per VIS; acceptance per VIS §6.
References & Related Links

Informative references and related internal links for context only. Product acceptance remains governed by the applicable project specifications, referenced product standards, and GlassRenu VIS/DSS procedures.

DSS-M.06.02

Notch Root Micro-Cracks

DSS-M.06.02
Notch Root Micro-Cracks
Mechanical — drilling/notching-related; integrity cue

Classification & Scope (Normative)

Notch root micro-cracks are fine, crack-like fissures emanating from the root (inside radius) of a notch or cutout. They are integrity indicators: any confirmed cracking (even hairline) places the lite out of in-place restoration scope under VIS (CAT-5 by condition/location). Classification here is appearance-only; methodology is out of scope. Inspect under VIS lighting/geometry after Non-Invasive Reveal; record surface numbering and worked-surface status on Forms:

Typical Presentation (Informative)

  • Short, radial hairlines starting at the notch root; may appear singly or as a small fan.
  • Often subtle at normal incidence; become evident in oblique sweep or with raking light.
  • May co-exist with perimeter micro-chips or a minor exit-lip from fabrication.
  • On laminated products, crack visibility may vary by ply; use parallax and angle to verify origin/ply.

Field Identification Cues (Normative)

  • Surface-catch class (MSRT)
  • Do not pass a stylus across any suspected crack. If needed, a single light, non-marring pass adjacent to (not across) the root may be used to sense local surface relief from associated chips/lip for context. MSRT is auxiliary and never determinative for integrity.
  • Visual signature
  • Filament-thin, continuous line(s) emerging from the notch root that do not behave like surface scratches (no consistent flank sparkle; may traverse micro-texture without interruption).
  • Under raking/oblique, dark/bright phase change persists with small viewpoint shifts; may cast a faint line in transmitted reflections.
  • Viewing / lighting
  • Evaluate clean & dry at 12 / 36 / 72 in using normal incidence and oblique sweep (~60°–120°) with raking light. Capture both specular and transmitted views if accessible.
  • Location / access
  • Record pane ID and surface numbering (#1–#4; laminate-internal). Use parallax to determine if the cue lies between panes or laminate-internal; any inaccessible/internal crack is CAT-5 by location.
  • Coatings.
  • If the worked surface is coated, note coating status but remember: integrity (crack presence) governs classification; coating appearance rules apply separately at acceptance.

Severity & CAT Mapping (Normative)

  • Assign category by appearance + integrity:
  • CAT-5 (default for this entry): Any confirmed micro-crack at a notch root (visible continuity, branching, or propagation under angle/raking) → Non-Repairable / Out of In-Place Scope. Document and refer per project protocol (replacement/manufacturer service as applicable).
  • Reassign only if no crack is present:
  • If evaluation shows no fissure and only micro-chips/lip intruding onto the face → classify under M.06.01 Hole edge micro-chips (excess) or M.03.04 Edge “shelling” at holes/slots as appropriate.
  • If the cue is a linear surface score (continuous lineation away from root) without crack characteristics → classify under M.01 Linear scoring.
  • CAT is driven by integrity/location for cracks; acceptance is evaluated separately under VIS §6.

Differentiation & Mis-ID Pitfalls (Informative)

  • vs. Linear surface scratch at root: Scratches exhibit abrasive edges and MSRT catch; true micro-cracks can cross subtle texture without flank sparkle and may show tip blunting/branching.
  • vs. Exit-lip / burr: Exit-lip is edge-confined, reads SC-0 on the face, and lacks a continuous filament extending into the glass.
  • vs. Chip train: A train of tiny perimeter chips can appear dotted under low light; with raking, chips resolve to discrete facets rather than a continuous fissure.
  • vs. Laminate-internal artifact: In laminated make-ups, a ply-internal line that does not move with external parallax and does not respond to reveal on the outer face is internal → CAT-5 by location.

Evidence Package (Documentation Requirements) (Normative)

  1. Photo set (VIS): 12 / 36 / 72 in, normal + oblique, include raking macros of the notch root that resolve the continuous fissure (not just chip facets). Capture at least one context frame showing the notch geometry and hardware adjacency. Record distance/angle in-frame.
  2. MSRT note. If recorded, note SC class from an adjacent area only (do not cross the fissure); one light, non-marring pass; polymer stylus if coating is suspected.
  3. Forms: Pane ID; surface numbering (#1–#4; laminate-internal); worked surface Y/N; functional coating on worked surface? (Y/N/Unknown); reveal status; lighting/time; geometry checklist; photos attached.
  4. Disposition. Mark CAT-5 for confirmed micro-cracks; document stability concerns (e.g., growth direction, edge proximity). Refer per project protocol.

Reporting Language (Template)

  • M.06.02 Notch Root Micro-Cracks — Hairline fissure(s) observed emanating from notch root on surface #___ under VIS geometry (oblique + raking). MSRT not performed across fissure; adjunct reading SC-[ ] recorded nearby for context. Classification: CAT-5 (integrity/location). Surface numbering recorded; parallax checked. Photo set + forms attached; acceptance per VIS §6 (separate).
References & Related Links

Informative references and related internal links for context only. Product acceptance remains governed by the applicable project specifications, referenced product standards, and GlassRenu VIS/DSS procedures.

M.07

Cracking & Fracture (mechanically initiated)

DSS-M.07.01

Edge-Origin Stress Crack (chip origin)

DSS-M.07.01
Edge-Origin Stress Crack (chip origin)
Mechanical — fracture initiating at edge/arris or at an edge chip

Classification & Scope (Normative)

An edge-origin stress crack is a through-thickness (or developing) crack that initiates at the edge/arris—often from a pre-existing edge chip (“origin chip”)—and propagates inward under mechanical or handling stress. Any confirmed crack is an integrity indicator and lies out of in-place restoration scope under VIS (CAT-5 by condition/location). Classification is appearance-only; methodology is out of scope. Inspect under VIS lighting/geometry after Non-Invasive Reveal; record surface numbering and worked-surface status on Forms:

Typical Presentation (Informative)

  • Filament-thin, continuous line emerging from the edge/arris (or from a discrete origin chip at the edge), extending into the lite; may curve with stress fields.
  • No abrasive flank sparkle like a scratch; can show branching/hackle near the origin chip or at stress changes.
  • Often visible at standard view once length grows; raking light and oblique sweep clarify continuity.

Field Identification Cues (Normative)

  • Surface-catch class (MSRT)
  • Do not pass a stylus across any suspected crack. If needed, a single light, non-marring pass adjacent to the origin chip may be used to sense local relief from chip facets (context only). MSRT is auxiliary and is never determinative for integrity.
  • Visual signature
  • Unbroken, hairline fissure that can pass across faint surface texture without interruption; may display branching or feathering away from an edge chip origin.
  • Under oblique sweep, the line remains phase-stable (persists through small viewpoint shifts), unlike shallow surface scores.
  • Viewing / lighting
  • Evaluate clean & dry at 12 / 36 / 72 in using normal incidence and oblique sweep (~60°–120°); include raking light to resolve origin and continuity.
  • Location / access
  • Record pane ID and surface numbering (#1–#4; laminate-internal). If laminate-internal or between-pane by fixed parallax, mark CAT-5 by location and refer per protocol.

Severity & CAT Mapping (Normative)

  • Assign category by appearance + integrity:
  • CAT-5 (default): Any confirmed crack (edge-origin) → Non-Repairable / Out of In-Place Scope. Document extent, apparent growth direction, and proximity to corners/hardware; refer per project protocol (e.g., replacement/manufacturer service).
  • Reassign only if no crack is present:
  • If examination shows no fissure and only edge micro-chips/spalls → classify under M.03.01 / M.03.02 / M.03.03 as appropriate.
  • If the cue is a linear surface scratch (abrasive, chip-flank sparkle, MSRT catch) without crack characteristics → classify under M.01 Linear scoring.
  • CAT is governed by integrity/location for cracks; acceptance is evaluated separately under VIS §6.

Differentiation & Mis-ID Pitfalls (Informative)

  • vs. Edge micro-chipping/spall: Chips have faceted, sparkly flanks and are discrete; cracks are continuous, filament-thin and lack abrasive sparkle.
  • vs. Thermal stress crack (Th.03.01): Thermal cracks may show different origin cues (e.g., from localized heating or solar hot-spot) and pattern; if mechanism is uncertain, classify as crack = CAT-5 and note suspected cause in remarks.
  • vs. Surface score: Scores exhibit MSRT catch and abrasive edges; cracks may pass through slight residues/texture without interruption and can show branching.
  • vs. Laminate-internal line/inclusion: Use parallax and reflection tracking; a fixed, between-pane or ply-internal line is CAT-5 by location even if not structurally active on the exposed face.

Evidence Package (Documentation Requirements) (Normative)

  1. Photo set (VIS): 12 / 36 / 72 in, normal + oblique, include raking macros that show the origin (edge or origin chip) and continuous fissure. Add a context frame showing distance from edge/corner/hardware. Record distance/angle in-frame.
  2. MSRT note. If recorded, note adjacent SC-class only (do not cross the crack). One light, non-marring pass; polymer stylus if coating is suspected.
  3. Forms: Pane ID; surface numbering (#1–#4; laminate-internal); worked surface Y/N; functional coating on worked surface? (Y/N/Unknown); reveal status; lighting/time; geometry checklist; photos attached.
  4. Disposition. Mark CAT-5 for any confirmed crack. Note apparent stability (e.g., tip blunting vs. sharp active tip), estimated length, and proximity to support points. Refer per project protocol.

Reporting Language (Template)

  • M.07.01 Edge-Origin Stress Crack (chip origin) — Continuous fissure observed emanating from [edge/arris | origin chip] on surface #___ under VIS geometry (oblique + raking). MSRT not performed across fissure; adjacent reading SC-[ ] noted for context. Classification: CAT-5 (integrity/location). Surface numbering recorded; parallax checked. Photo set + forms attached; acceptance per VIS §6 (separate).
References & Related Links

Informative references and related internal links for context only. Product acceptance remains governed by the applicable project specifications, referenced product standards, and GlassRenu VIS/DSS procedures.

DSS-M.07.02

Through-Thickness Crack Propagation

DSS-M.07.02
Through-Thickness Crack Propagation
Mechanical — fissure extending through the lite; integrity cue

Classification & Scope (Normative)

A through-thickness crack is a continuous fissure that extends through the glass thickness (or is actively propagating toward full depth) and may branch, curve, or run under residual/operational stress. Any confirmed crack is an integrity indicator and is out of in-place restoration scope under VIS (CAT-5 by condition/location). Classification here is appearance-only; methodology is out of scope. Inspect under VIS lighting/geometry after Non-Invasive Reveal; record surface numbering and worked-surface status on Forms:

Typical Presentation (Informative)

  • Filament-thin, continuous line that remains visible under small viewpoint shifts; may mirror on opposite surface reflections due to depth.
  • Can display branching (hackle), kinks, or arrest marks; may originate at edge/corner, hole/notch root, impact origin, or thermal hot spot.
  • Frequently apparent at standard view; oblique/raking views clarify the origin and continuity.

Field Identification Cues (Normative)

  • Surface-catch class (MSRT)
  • Do not pass a stylus across any suspected crack. If needed, one light, non-marring pass adjacent to the feature may document nearby surface relief (for context only). MSRT is auxiliary and never determinative for integrity.
  • Visual signature
  • Unbroken, phase-stable line that can cross faint residues or micro-texture without interruption; may show tip sharpening in the propagation direction.
  • Under raking light, crack edges do not exhibit consistent abrasive chip-flank sparkle typical of scratches; instead, they read as a dark/bright contrast that remains with small viewpoint changes.
  • Viewing / lighting
  • Evaluate clean & dry at 12 / 36 / 72 in, using normal incidence and oblique sweep (~60°–120°) with raking light. Capture both specular and, where possible, transmitted-light views to confirm depth.
  • Location / access
  • Record pane ID and surface numbering (#1–#4; laminate-internal). If fixed parallax indicates a between-pane or laminate-internal crack, it remains CAT-5 by location and must be referred (out of in-place scope).

Severity & CAT Mapping (Normative)

  • Assign category by appearance + integrity:
  • CAT-5 (default): Any confirmed through-thickness (or actively propagating) crack → Non-Repairable / Out of In-Place Scope. Document length, origin (edge/corner/hole/impact/thermal), and proximity to supports/hardware; refer per project protocol (e.g., replacement/manufacturer service).
  • Reassign only if no crack is present:
  • If the cue is an abrasive line (continuous score) with MSRT catch and chip-flank sparkle → classify under M.01 Linear scoring.
  • If the cue is edge/penetration chipping without a continuous fissure → classify under M.03.01–M.03.04 or M.06.01 as appropriate.
  • CAT is governed by integrity/location for cracks; acceptance is evaluated separately under VIS §6.

Differentiation & Mis-ID Pitfalls (Informative)

  • vs. Linear scratch/score: Scratches show abrasive edges and clear MSRT catch; cracks remain phase-stable, can cross faint films without losing continuity, and must not be stylus-tested.
  • vs. Thermal stress crack (Th.03.01): Thermal origins often align with localized heating or solar hot-spot geometry; mechanism note may be added, but classification remains crack = CAT-5.
  • vs. Star break (M.04.02): Star/bullseye networks are impact-origin crack systems; default CAT-5 by integrity.
  • vs. Laminate-internal feature / IGU cavity artifact: Use parallax and reflection tracking; internal = CAT-5 by location even if not structurally active on the exposed face.

Evidence Package (Documentation Requirements) (Normative)

  1. Photo set (VIS): 12 / 36 / 72 in, normal + oblique, include raking macros that show continuous fissure and origin (edge, corner, hole/notch, impact). Add a context frame showing distance to edges/corners/hardware. Record distance/angle in-frame.
  2. MSRT note. If recorded, note adjacent SC-class only (do not cross the fissure); one light, non-marring pass; polymer stylus if a coating is suspected.
  3. Forms: Pane ID; surface numbering (#1–#4; laminate-internal); worked surface Y/N; functional coating on worked surface? (Y/N/Unknown); reveal status; lighting/time; geometry checklist; photos attached.
  4. Disposition. Mark CAT-5 for any confirmed crack. Note apparent stability (active tip vs. blunted), estimated length, origin, and nearest support/hardware. Refer per project protocol.

Reporting Language (Template)

  • M.07.02 Through-Thickness Crack Propagation — Continuous fissure observed on surface #___ under VIS geometry (oblique + raking), originating at [edge/corner/hole/notch/impact/thermal]. MSRT not performed across fissure; adjacent reading SC-[ ] noted for context. Classification: CAT-5 (integrity/location). Surface numbering recorded; parallax checked. Photo set + forms attached; acceptance per VIS §6 (separate).
References & Related Links

Informative references and related internal links for context only. Product acceptance remains governed by the applicable project specifications, referenced product standards, and GlassRenu VIS/DSS procedures.

DSS-M.07.03

Fragmentation Pattern (tempered fracture documentation)

DSS-M.07.03
Fragmentation Pattern (tempered fracture documentation)
Mechanical / integrity — safety glass “dice” pattern; out-of-scope for in-place restoration

Classification & Scope (Normative)

A fragmentation pattern documents the post-break state of a fully tempered (or heat-strengthened) lite that has fractured. Tempered fracture produces characteristic small, interlocking “dice”; heat-strengthened fracture produces larger, irregular islands with longer cracks. Any fractured lite is an integrity condition and is out of in-place restoration scope under VIS (CAT-5 by condition/location). This DSS defines how to identify and document the condition; it does not prescribe repair. Inspect from a safe position under VIS lighting/geometry after ensuring the area is made safe; record surface numbering and worked-surface status on Forms:

Typical Presentation (Informative)

  • Tempered: pane appears as a mosaic of small cubes (“dice”); numerous short, tortuous cracks; often audible “ticking.” Fragments typically remain held in place by gaskets, pressure plates, or interlayer (if laminated tempered).
  • Heat-strengthened: larger, jagged fragments and longer crack ligaments; fewer but wider pieces than fully tempered.
  • Common origins: edge damage, hole/notch stress, NiS inclusion, thermal stress, impact, or frame bite. Origin may be evident as a denser crack nucleus (rosette) or at a hardware penetration.
  • Spandrel/ceramic-frit zones: fracture is often masked from view on the room side; inspect from the brightest vantage where safe.

Field Identification Cues (Normative)

  • Do not perform MSRT on fractured glass. Treat the lite as unstable.
  • Visual signature
  • Tempered “dice”: dense, fine mosaic; difficult to trace a single crack long distance.
  • Heat-strengthened: larger blocky islands; individual cracks run farther before turning.
  • Laminated tempered: dice pattern on one or both plies with interlayer retention; may show offset patterns ply-to-ply.
  • Viewing / lighting
  • From a safe, controlled position, document at 36 in and 72 in (12 in macros only if safe). Use normal incidence for overall pattern and oblique sweep (~60°–120°) to highlight the crack network density and any suspected origin (edge, corner, hole/notch, impact).
  • Location / access
  • Record pane ID and surface numbering (#1–#4; laminate-internal). Note product family if known (tempered, heat-strengthened, laminated, IGU). If fracture involves an IGU, indicate which ply (outboard/inboard) has fragmented.

Severity & CAT Mapping (Normative)

  • CAT-5 (default): Any fractured lite (tempered or heat-strengthened), regardless of fragment size or retention, is Non-Repairable / Out of In-Place Scope.
  • Reassign only if unbroken: If re-inspection determines the pane is not fractured (e.g., a star-break in annealed/laminated without full fragmentation), classify under M.04.02 (impact star) or M.07.02 (through-thickness crack) as appropriate—still an integrity condition (CAT-5).
  • CAT is governed by integrity/location for cracks; acceptance is evaluated separately under VIS §6.

Differentiation & Mis-ID Pitfalls (Informative)

  • vs. Annealed/laminated star break: Star/bullseye presents radial arms/rings without full “dice” mosaic. If only cracked (not fully fragmented), use M.04.02 / M.07.02 (still CAT-5).
  • vs. Patterned privacy/etched glass: Decorative patterns can mimic a network from afar; raking light and touchless close visual confirm whether it’s a crack mesh vs. a surface pattern.
  • vs. Surface films/residues: Films do not form polygonal, interlocking boundaries; a mosaic with edge lift or loose granules indicates fracture.
  • IGU specifics: If only one pane in an IGU is fragmented, use parallax and reflections to note whether it is #1/#2 (outboard) or #3/#4 (inboard). Document cavity debris or fogging separately (A.01 family).

Evidence Package (Documentation Requirements) (Normative)

  1. Safety & stabilization note. Confirm that the area is barricaded or the lite is secured per site protocol prior to close documentation.
  2. Photo set (VIS):
  3. Overall: 72 in and 36 in, normal incidence, capturing the full pane and adjacent framing/hardware.
  4. Oblique: at least one oblique sweep frame showing mosaic density and any suspected origin (edge/hole/corner).
  5. Detail (if safe): a macro of the fragmentation field at a representative area; a macro at the suspected origin (edge chip, hole root, impact).
  6. For IGUs/laminates, include a reflection/parallax shot to establish which ply has fragmented.
  7. Forms: Pane ID; product family (tempered / heat-strengthened / laminated); surface numbering (#1–#4; laminate-internal); worked surface Y/N (generally N); reveal status (not applicable for fractured); lighting/time; geometry checklist; photos attached.
  8. Optional fragment size survey (if and only if safe & permitted). On a secured, removed specimen (not in-place), record a representative fragment size field for reference against product norms (do not attempt on an installed, unstable lite).
  9. Disposition. Record CAT-5 and notify responsible party per project protocol (e.g., replacement, temporary shoring, manufacturer/engineer review). Note any suspected mechanism (impact, edge damage, hole/notch stress, thermal, NiS) as informative only.

Reporting Language (Template)

  • M.07.03 Fragmentation Pattern (tempered) — Pane exhibits full “dice” fragmentation on surface #___ / ply [outboard/inboard] under VIS geometry (normal + oblique). Integrity condition; MSRT not applicable. Classification: CAT-5 (out of in-place scope). Suspected origin: [edge chip / hole root / impact / thermal / unknown] (informative). Photo set and forms attached; area secured per site protocol; acceptance per VIS §6 (separate).
References & Related Links

Informative references and related internal links for context only. Product acceptance remains governed by the applicable project specifications, referenced product standards, and GlassRenu VIS/DSS procedures.

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