An atrium at the police head quarters was made up of over head glazing ,the glazing was double glazed made up of toughened inner pane and laminated externally, this make up of glass has a high risk of causing thermal cracking if the film had been applied internally.
Solution
Filmshield assembled scaffolding to fit an 3M External RE 15 SIARXL Silver (see attached for performance data) the film was then sealed with a clear silicone bead to protect against weathering.