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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, solar heat and visible light. Since almost all window films reject about 98% of U.V. light, we recommend a film that cuts half of the heat and half of the light. If you think that this is too dark, check it out. You won't even see it. North facing windows let in U.V. , so we recommend treating all of the glass in any room. We have U.V. testers we can leave with you to enable you to run your own tests. |
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