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