PVC vs. uPVC Windows
I have often heard high-performance window manufacturers tout that their uPVC–unplasticized polyvinyl chloride–is a “greener” material than PVC–i.e., plasticized polyvinyl chloride. I understand the reasoning but can’t find proof that more typical North American window manufacturers use PVC and not uPVC. It doesn’t seem logical to use a flexible material when a more-rigid material can work. Exceptions might be vinyl-wrapped wood frames, such as Anderson 400 series, but for typical replacement windows and other low-cost vinyl windows, are the frames made from uPVC?
GBA Detail Library
A collection of one thousand construction details organized by climate and house part