An opaque or obscuring coating or opacifier applied to glass used in spandrel or other nonvision applications.
GlassRenu · Educational illustration
Meaning and boundaries
The term may encompass ceramic enamel, silicone-based paint, organic film, or other systems with different fabrication and compatibility rules.
Why it matters in glass restoration
Unknown coating type, surface, adhesion, insulation contact, or sealant exposure makes restoration on or near the coating a manufacturer-referral condition.
Related terms
References
- ASTM International — ASTM C1376-21a: Pyrolytic and Vacuum Deposition Coatings on Flat Glass
Publisher’s original source - Vitro Architectural Glass — Spandrel Glass — Types and Recommendations
Publisher’s original source - ASTM International — C1954 — Standard Specification for Decorative Enamels on Flat Glass
Publisher’s original source