The BEST way would be infrared image testing. Only top-tier roofing companies will have them, so may be hard to locate in rural areas. However, the technology is getting older, and the cameras that we ... read more
I am very pleased with the windows that were installed in my home office. The room used to run 2-3 degrees warmer than the rest of the house and is now usually 2-3 degrees cooler than the rest of the house. Wish I had done it sooner!!