A documented condition under which replacing the lite or assembly is the recommended or required action instead of surface restoration.
Photographer/sender to be confirmed
Meaning and boundaries
Replacement may be driven by safety, structural capacity, code, sealed-unit failure, coating loss, economics, appearance, warranty, or owner criteria; no one universal scratch depth applies.
Why it matters in glass restoration
Clear criteria prevent inappropriate restoration and help customers compare realistic alternatives.
Related terms
References
- National Glass Association — GANA Glazing Manual, 2022 edition
Publisher’s original source - National Glass Association — Construction Site Protection and Maintenance of Architectural Glass
Publisher’s original source - ASTM International — ASTM C1048-25: Heat-Strengthened and Fully Tempered Flat Glass
Publisher’s original source - GlassRenu — Before You Begin
Publisher’s original source - ASTM International — ASTM E1300-24: Determining Load Resistance of Glass in Buildings
Publisher’s original source