PRIVACY WINDOW FILM

A very common customer request – A window that you can see through during the day, but can give you privacy at night, even with the lights on.

Sadly, we have to inform you there is no such thing. There is no film that is transparent (allowing light to pass through so that objects behind can be distinctly seen) during the day and at the same time blocks the view from the outside at night when you have the light on inside.

All glass in windows reflects a certain amount of light; the percentage reflected depends on the type of glass in the window. The higher the efficiency of the window, the more light it reflects. During a very bright day, a passerby would probably not be able to see through a high-efficiency window into your home, this is because the amount of light being reflected is greater than the amount of light coming out of your house.

The same principle applies at night when you are inside your home. If you try to look through your window at night in a brightly lit room, you would probably see your own reflection, because the amount of light being reflected is greater than the amount of light coming from the outside. Furthermore, since a window only reflects a percentage of visible light, the light that is not being reflected is going through the window and into the dark street. This, of course, would enable any passerby to see through your window.