A manufactured polymeric film installed onto an existing glass surface to modify solar, optical, ultraviolet, decorative, privacy, safety, or security behavior.
GlassRenu archive
Meaning and boundaries
Applied film is not a deposited glass coating or a laminated interlayer; adhesive, construction, edge termination, anchorage, warranty, and performance vary.
Why it matters in glass restoration
Abrasive restoration normally removes or damages film, and film presence can change thermal stress and cleaning compatibility.