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