FAQ: The Advantages of Window Film

QUESTION: Will I save a lot of energy if I cover my west-facing sliding glass doors with window film?

 

ANSWER: Sunlight shining in your home can cause a tremendous amount of internal summer heat gain. Applying a light-reflecting film to west- and east-facing windows that receive a lot of sunlight can cut your cooling costs. Actual savings will depend on the VLT (visible light transmittance) rating of the film you use. The lower the VLT, the less light the film will allow to enter your home and the greater your savings will be.

You'll save year-round and improve winter comfort if you use a light-reflecting film with low-E capabilities. This type of film reflects both light and infrared energy back toward its source, thus helping prevent furnace and body heat from radiating through your windows in winter.


 

Last updated: 02/16/09