UPVC Windows Repairs uPVC, or Unplasticized Polyvinyl Chloride, is a low-maintenance building material that can provide your home with years of energy efficiency and design. However, these windows do need care and maintenance periodically. Wipe the frames and cladding down with a soft clean cloth to remove dust and dirt. https://www.repairmywindowsanddoors.co.uk/derby-windowrepair/