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