UPVC Windows Repairs uPVC, also known as Unplasticized Polyvinyl Chloride, is a low-maintenance building material that can give your home years of energy efficiency and design. However, these windows require care and maintenance periodically. Wipe the frames and cladding down with a soft clean cloth to remove dirt and dust. https://www.repairmywindowsanddoors.co.uk/rayleigh-windowrepair/