1. Fading is caused by 40% UVA, 25% visible light, 25% heat and 10% miscellaneous. 2. Natural fibers like silk and wool are less fade resistant than synthetic fibers. 3. Antiques, tapestries, rugs, etc use less stable dyes and will fade more quickly. 4. Fluorescent dyes are less color stable than other colors. 5. Clear glass will reject some solar heat Clear 1/S" glass will reject 13% Clear 1/4" glass will reject 17% Clear 1/8" insulated glass will reject 29% of solar heat Clear 1/4" insulated glass will reject 29% of solar heat 6. UVC is screened by the ozone layer UVB is screened in degrees by glass UVA is screened 99% by solar film. 7. Solar films will retard fading, no film will stop it!

Photograph of sofa that set in a bay  window area unprotected by solar film!