Window Film Information
What it is...
Window Film is a transparent plastic laminate that is applied to the surface of commercial, residential, or automotive glass to provide heat and light rejection. Window film is also produced in varying shades and colors to accomodate different architectural designs and color schemes. The following passage was taken directly from the International Window Film Association's web page:
"There are many types and constructions of solar control and safety window films. These films are considered in the building industry to be "retrofit" products; that is, products to be applied to existing buildings as opposed to use in new construction. In their simplest forms, window films are composed of a polyester substrate to which a scratch resistant coating is applied on one side; a mounting adhesive layer and a protective release liner is applied to the other side. When the release liner is removed, that side of the film with the adhesive is applied to the interior surface of the glass."
For more information on window film composition, visit the IWFA web domain at
www.iwfa.com
How It's Classified...
There are many factors to consider when choosing the correct film for you. The following basic factors determine the type of film your application requires:
Visible Light Transmission (VLT)
The percent of total visible light that is transmitted through the window film/glass system. The LOWER the number, the LESS visible light transmitted.
Visible Light Reflectance (VLR)
The percent of total visible light that is reflected outwards by the window film/glass system. The LOWER the number, the LESS visible light reflected.
Ultraviolet Rejected
The percent of ultraviolet (UV) that is blocked by the window film/glass system. The HIGHER the number, the LESS UV transmitted. At Film At Eleven, Inc. ALL of our window films reject 99% of UV rays.
Total Solar Energy Rejected
The percent of total solar energy (heat) rejected by the window film/glass sytem. The HIGHER the number, the MORE total solar energy rejected.
For more information on window film classification and ratings, visit the IWFA web domain at
www.iwfa.com