UPVC Windows Repairs uPVC, also known as Unplasticized Polyvinyl Chloride, is a low-maintenance building material that will provide your home with years of energy efficiency and design. These windows will need some maintenance and care. Clean the frames and cladding with a soft, clean cloth to remove dirt and dust. https://www.repairmywindowsanddoors.co.uk/luton-windowrepair/