An applied film used primarily to change glass appearance, translucency, pattern, privacy, color, or graphics.
GlassRenu · Educational illustration
Meaning and boundaries
Decorative intent does not establish safety, security, ultraviolet, solar-control, fire, or code performance.
Why it matters in glass restoration
Scratches, bubbles, adhesive failure, haze, or discoloration in film can resemble glass damage but require film-specific correction or replacement.