How do typical window films work to control sunlight and heat?
Typically, the window films that we apply are designed to reduce the amount of solar heat transmission through window glass by increasing the solar reflection (not necessarily visible reflection) and solar absorption through the glass. Typical colored or dyed films work primarily through increased absorption. The color absorbs the solar energy at the glass, thus reducing the direct transmission into the room. These films are not as effective as reflective films for reducing heat. Reflective films are films that have been precision coated with metals. These metallized films are designed to increase the solar energy reflection of the glass. Reflective films range from moderate to excellent in solar performance (heat gain reduction).
