I read somewhere that these films can damage your windows. But if it means I can delay replacing them for a few more years than it would be worth it. My windows are construction grade windows. My guess is the minimum allowed by law at the time. (Like everything else) So if I can get more usable life from them then I am going to try. I don’t want to spend too much but I also don’t want to buy junk. After reading around on the Internet, I have decided on Gila window film from Lowes.

I will wait a few months, right now I want to sun to warm the house. Hopefully, for about $60, I can reduce the amount of heat gain on the south side of the house. This film will also reduce heat loss. Maybe I will buy a roll now and apply some on the backside windows. As inexpensive as it is, it is worth a try.

According to Gila’s website it is safe for double pane windows.

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