At Ashirvad, we use a unique UV protected CPVC compound supplied by Lubrizol to manufacture pipes and fitting. After being in use for over 50 years, the FLOWGUARD PLUS CPVC pipes have displayed no deterioration in pressure withstanding capacity after decades of exposure to sunlight even after several years of installation. However, for extra protection for pipes that are directly under harsh sunlight, we recommend covering all pipes and fittings installed on the roof to prevent any kind of mechanical damage to the system.