A linear disruption of an applied glass coating that changes its appearance, continuity, or performance.
GlassRenu · Educational illustration
Meaning and boundaries
A coating scratch may not extend into the glass substrate, while a substrate scratch beneath or through a coating is a different condition.
Why it matters in glass restoration
Removing or polishing a coating can enlarge the visible defect and change solar, thermal, reflective, color, or emissivity performance.
Related terms
References
- ASTM International — ASTM C1376-21a: Pyrolytic and Vacuum Deposition Coatings on Flat Glass
Publisher’s original source - National Glass Association — GANA Glazing Manual, 2022 edition
Publisher’s original source - National Glass Association — Proper Procedures for Cleaning Architectural Glass Products
Publisher’s original source