Will window film really stop fading of fabrics?

There are six factors affecting fabric fading:

1.  Ultraviolet Light
2.  Visible Light
3.  Heat and Humidity
4.  Chemical Vapors (including ozone)
5.  Age of Fabric
6.  Dye Fastness

Clear single pane glass (1/8″ to 1/4″) will reject 23-28% of the ultraviolet light from the sun.  Insulated glass is slightly better, rejecting 36-41%.  Window films installed on glass reject 95-99% of solar ultraviolet light.

Different types of clear glass and window systems will reject 13-29% of the solar heat.  With window films, 80% solar heat rejection can be obtained.

No window film can eliminate fading.  It can, however, offer maximum protection from fading due to solar ultraviolet light and solar heat.

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