UPVC Windows Repairs uPVC, also known as Unplasticized Polyvinyl Chloride is a low-maintenance building material that will give your home years of energy efficiency and fashion. These windows will need some attention and maintenance. Clean the frames and cladding using a soft cloth in order to remove dust and dirt. https://www.repairmywindowsanddoors.co.uk/islington-windowrepair/