Questions about tesa tesamoll THERMO insulating film for thermal insulation on windows

We clean them before installation, then we can gently clean the plastic.

Attaching it outside basically works. We used it to replace a broken window pane for a while. However, the film became a bit wavy over time. As far as I know, it does not keep out UV and infrared radiation. The insulation of the window is only improved by the additional layer of air.

I bought the film last year and insulated a window like this over the winter. The window warmed the glass by 3 degrees.