UPVC Windows Repairs uPVC, also known as Unplasticized Polyvinyl Chloride is a low-maintenance construction material that can provide your home with years of energy efficiency and design. These windows will need some maintenance and care. Wipe the frames and cladding down with a soft, clean cloth to remove dirt and http://www.stes.tyc.edu.tw/xoops/modules/profile/userinfo.php?uid=1201393