UPVC Windows Repairs uPVC (Unplasticized Polyvinyl Chloride) is a low maintenance construction material that will provide your home with energy efficiency and style for many years. However, these windows require care and maintenance at times. Clean the frames and cladding using a soft cloth to remove dust, dirt, and grime. https://www.repairmywindowsanddoors.co.uk/stokenewington-windowrepair/