Does 3M window film’s UV protection lose its effectiveness over time?

In by Raleigh Window Tinting

The ultraviolet (UV) protection that we use in our proprietary adhesive system is not indefinite, but we design our window films to maintain high UV protection throughout their lifetime. In fact, we tested an actual glass sample from The Dumbarton House, Washington, DC, and the ultraviolet transmission still measures <1% after 10 years!
By blocking out 99% of UV light from the sun, 3M window films reduce fading of furniture, flooring, and artwork, extending the lifespan of your decor. 3M films have also earned the Skin Cancer Foundation’s Seal of Recommendation because they provide safe and effective sun protection for occupants.