UPVC Windows Repairs uPVC (Unplasticized Polyvinyl Chloride) is a low maintenance construction material that will provide your home with energy efficiency and elegance for many years. These windows will need some attention and maintenance. Clean the frames and cladding down with a soft, clean cloth to remove dust and dirt. https://www.repairmywindowsanddoors.co.uk/staines-windowrepair/