We just remoded a screen porch into a sun room. We have the Anderson window 300 series. The UV protection factor in these windows is not the strongest that they offer. One notch down which I believe is their standard variety.
I have called Anderson and went to their website, but have yet to determine the "fading factor" for my upholstered furniture. We get reflection of the sun from the side driveway. Also we get sun and reflection from our deck which faces east, on the opposite side. Our sliding door is on the deck side.
My concern is the fading of our furniture. I would like input should anyone know if I need to do some window treatments to protect the furniture? I love it open and bright!