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 style. However, these windows need care and maintenance periodically. Clean the frames and cladding with a soft clean cloth to remove dirt and dust. https://www.repairmywindowsanddoors.co.uk/wokingham-windowrepair/