We had Underglass install window film on our SW-facing window in 2008 shortly after the house was built. We've had no problems with it so far. I don't know if Solar Guys installed film back then.
Underglass was (is?) a 3M installer. However, looking at the invoice, there is no mention of 3M or any warranty. It might be worth a call to see if they kept records that far back. 352-753-5267.
|