A defined part of a glass lite evaluated under a particular rule, such as a central viewing area, edge area, or restoration work area.
GlassRenu · Educational illustration
Meaning and boundaries
Zone boundaries vary by product and specification and should not be copied from one glass standard to another.
Why it matters in glass restoration
Damage location can affect visibility, acceptance, edge risk, repair access, blending, and the applicable decision path.
Related terms
References
- ASTM International — ASTM C1036-25: Standard Specification for Flat Glass
Publisher’s original source - National Glass Association — Guidelines on How to View Decorative Glazing Products
Publisher’s original source - ASTM International — ASTM C1376-21a: Pyrolytic and Vacuum Deposition Coatings on Flat Glass
Publisher’s original source