UPVC is a very durable material used in water and sewer pipes for at least 100 years. Vinyl windows are so durable that the vast majority of them installed over the past 25 years are still in use. Good quality uPVC windows and doors are tested for ultraviolet resistance to ensure they won’t fade in the harsh Indian sun.  FONIRTE windows and doors systems have been successfully used in swimming – pools, marine and ocean environments without detriment to the surface finish or performance. One of the main assets of FONIRTE windows and door systems is their resistance to driving rain and their joint tightness.