Glass and Technical

Every window film decision is really a decision about the glass underneath it. These articles cover the technical ground that determines what is possible on a given opening, in plain language rather than specification shorthand.

Glass types do not behave alike. Tempered, annealed, laminated and insulated units respond differently to solar absorption, to thermal stress and to breakage, and a film that is appropriate on one can be a problem on another. Articles here explain how glass type, thickness, coatings and surface position are identified in the field, what film to glass compatibility guidance actually says, where manufacturers restrict or exclude a combination, and how thermal stress risk is evaluated before work starts rather than explained afterward.

Also covered: the performance terms that appear on every data sheet and quote, what each one measures, what a manufacturer warranty covers and excludes on existing glass, and the conditions that make us decline a job or change a specification.

Written for facility and property managers, architects and specifiers, and anyone who has been told that film will void their window warranty and wants a straight answer about when that is true.