DSS-Co.05.03 — Frit Over-Spray / Edge Ghost

Frit over-spray / edge ghost is an appearance change where fine frit particulates or mist extend just outside the intended frit edge (mask/screen boundary), producing a narrow, edge-parallel halo or ghost fringe after firing. The condition is planar within the fired frit layer (usually on #2 or #4) and non-tactile from the viewing surface. Classification is appearance-only per VIS (method-agnostic). Inspect after Non-Invasive Reveal at the viewing face under VIS lighting/geometry; record surface numbering and worked-surface status.

System ID is critical. Verify frit location (surface #), edge geometry (straight/curved, corner details), mask/artwork specification, and intended edge tolerance from shop drawings/submittals.

• Narrow halo band (commonly 1-8 mm) immediately outside the frit edge; density decays with distance from the edge.
• Uniform along long edges or localized at corners/start-stop zones; may show fine “sparkle” under raking from micro-particulate in the halo.
• Often lot-repetitive along identical edges, indicating process origin (mask leakage/spray plume).

Surface-catch class (MSRT)

• From the viewing (glass) side: SC-0 (planar defect behind the glass).
• Do not MSRT the frit face in situ. MSRT supports classification only on the viewing surface.

Visual signature

• Edge-parallel fringe/gradient following the exact frit perimeter; no chip-flank sparkle, no grooves/pits at the viewing face.
• Gradient profile: highest density at frit boundary, dissipating outward; no ring/run geometry.

Viewing / lighting

• Evaluate clean & dry at 12 / 36 / 72 in, normal and oblique sweep (~60°-120°); use raking macros across the edge transition and broad specular to show halo gradient. Record distances/angles in-frame.

Location / access

• Record pane ID and surface numbering (#1-#4; laminate-internal). If frit is on #2/#3 (IGU interior) or otherwise non-exposed, in-place correction is out of scope → CAT-5 by location (classification remains Co.05.03).

Mechanism cue (context)

• Mask leakage, spray plume beyond mask, screen bleed at edge, electrostatic drift, or pre-fire handling shedding near boundary. Consistency along identical edges supports process attribution.

Assign CAT by visibility at acceptance geometry and halo prominence/extent. Depth values are apparent optical, not substrate relief.

• CAT-1 (Benign / non-relief): Very faint halo legible mainly at oblique/raking; halo width ≲ 2-3 mm; SC-0 viewing face.
• CAT-2 (Light): Discernible fringe at standard distance in common lighting; halo width ~3-6 mm or moderate density along limited lengths; SC-0.
• CAT-3 (Moderate): Pane-noticeable halo at standard distance along long edges/corners, width ≳ 6-8 mm or high density compromising edge crispness over ≥0.5% of visible field; SC-0.
• Reclassify when:
• Cloud-like opacity shifts without edge-parallel geometry → Co.04.01 Mottle/Cloudiness.
• Loose paint on viewing face lifts on reveal → R.02.01 Paint overspray film.
• Front-face grooves/pits/fused nodules → consider M/Th families.
• CAT-5 (by condition/location): Between-pane/inaccessible frit face or system constraints preclude in-place work → CAT-5.

CAT is appearance-based; acceptance is separate under VIS-A §6 at 12/36/72 in.

• vs. Roller pickup (Co.02.01): Roller ghosting shows panel-spanning parallel bands at fixed pitch, not edge-tied halos.
• vs. Back-paint edge fog (Co.04.01): Similar halo can occur in back-paint; confirm system and face to avoid mis-attribution.
• vs. Chemical halos (Ch family): Chemistry presents rings/runs/wetting geometry and may yield SC-1/2; Co.05.03 is edge-parallel, ringless, and SC-0 at the viewing face.
• vs. Frit smears/offset (Co.05.01): Smears/offset impact the artwork edge itself (drag/registration); Co.05.03 is a separate fringe outside the intended boundary.

• Photo set (VIS): 12 / 36 / 72 in, normal + oblique; raking macros across the edge transition; overview frames showing edge length and uniformity. Record distance/angle in-frame.
• System ID. Confirm frit face, mask/artwork specification, lot/date; obtain shop drawings/submittals if available.
• MSRT (viewing face). Record SC-0 to distinguish from front-face mechanical/chemical attack.
• Lot/replication check. Survey adjacent units/edges for repeatability (supports process origin).
• Forms: Pane ID; surface numbering & worked-surface status; reveal status; lighting/time; geometry checklist; photos attached.
• Acceptance split: Post-restoration acceptance per VIS-A §6; classification ≠ acceptance.

• Co.05.03 Frit Over-Spray / Edge Ghost - Edge-parallel halo/fringe beyond frit boundary on surface #___ (frit face confirmed); MSRT (viewing face): SC-0; visible at [12/36/72 in] under VIS geometry (oblique/raking most legible). Morphology: gradient fringe, no chip-flank grooves/pits at viewing face. Classification: CAT-[1/2/3] by visibility/extent; CAT-5 if between-pane/inaccessible. Forms + photo set attached; acceptance per VIS-A §6.

⭐ DSS-M

Damage Specification Standards 2026

DSS-M Mechanical Abrasion/Scoring/Impact/Cracking

Draft v1.0

M.01 Linear Scoring / Tracks

• M.01.01 Scraper/razor scoring
• M.01.02 Straightedge/metal guide scoring
• M.01.03 Glass‐on‐glass track (paired arcs/lines)
• M.01.04 Conveyor/belt line scoring (handling line)
• M.01.05 Hardware/fastener drag line

M.02 Abrasion Fields (Non‐linear)

• M.02.01 Micro‐abrasion swirls / pad trails
• M.02.02 Cross‐hatch scuffing / sanding pattern
• M.02.03 Directional webbing (repetitive paths)
• M.02.04 Burnish/haze field (localized over‐polish)
• M.02.05 Squeegee burn lines (friction film)

M.03 Edge & Corner Damage

• M.03.01 Edge micro‐chipping (minor)
• M.03.02 Edge gross chipping / clamshell
• M.03.03 Corner crush / corner spall
• M.03.04 Edge “shelling” at hardware holes/slots

M.04 Impact & Contact

• M.04.01 Impact divot (non‐through)
• M.04.02 Star break / bullseye initiation (annealed/laminated)
• M.04.03 Pellet/BB impact signature
• M.04.04 Tool strike / ladder foot imprint
• M.04.05 Hardware contact rub (spider/rail fittings)

M.05 Fabrication Debris (FD) Scratches

• M.05.01 Short FD scratch cluster
• M.05.02 Long FD scratch field
• M.05.03 Wash‐line scratch bands

M.06 Drilling/Notching‐Related

• M.06.01 Hole edge micro‐chips (excess)
• M.06.02 Notch root micro‐cracks

M.07 Cracking & Fracture (mechanically initiated)

• M.07.01 Edge‐origin stress crack (chip origin)
• M.07.02 Through‐thickness crack propagation
• M.07.03 Fragmentation pattern (tempered fracture documentation)