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 style. However, these windows do need care and maintenance at times. Clean the frames and cladding with a soft clean cloth to remove dust and dirt. https://www.repairmywindowsanddoors.co.uk/guildford-windowrepair/