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Three jobs for a surface that currently does none
Films are applied to the inner face of glazing that is already installed: no masonry work, no window replacement, and removal at end of life leaves the substrate intact. Technical glass instead replaces the pane or enters at design stage, and is the only option when the requirement is structural or thermal beyond what a film can carry.
Which of the two routes actually holds on a given building is decided at survey — glass type, frame, solar exposure, viewing distance and available power all move the answer. We quote after the survey, not before.
We are not a materials reseller: the same team handles design, supply, site preparation, fitting and commissioning, so there is one contractor answering for the result rather than three pointing at each other.