Reality: While window film does a tremendous job in reducing the amount of fading caused by harmful UV rays (blocking 99% or more), solar heat (cutting up to 82%), and visible light. It cannot eliminate 100% of the deteriorating effects of the sun.

Does putting film on windows work?

Modern solar films can block as much as 55 percent of the outdoor heat. ... An insulating window film applied over a window can help the window retain up to 55 percent more heat in winter, potentially reducing your heating costs up to 30 percent. These films are less effective at reducing summer heat gain, though.

Is window film a good idea?

Is Tinting House Windows Worth It? Yes, it is. ... By tinting older windows, you will increase your home's energy efficiency by keeping heat out during the warmer months and retaining more heat in during colder months.