UPVC Windows Repairs uPVC (Unplasticized Polyvinyl Chloride) is a low maintenance construction material that can give your home energy efficiency and style for a long time. These windows will need some care and maintenance. Wipe the frames and cladding down with a soft clean cloth to remove dirt and dust. https://www.repairmywindowsanddoors.co.uk/feltham-windowrepair/