1. Surface Layer - Surface Layer- The Material is ASA(Acrylonitrile styrene acrylate) and ultra weather resin, to block the solar ultra violet and reduce the coefficient of heat conductivity, ensure product durability and resistance to chemical corrosion. 2. Underlying layer - contains Multi foam giving to the material light weight and improved sound and themal insulating properties and its a good material toughness special to ensure the strength at the same time, increase the rigidity and light illumination. ASA is made by intoducing a grafted acrylic ester elastomer during a copolymerization of styrene and acrylonitrile (SAN). The finely divided powder is uniformly distributed in and grafted to the SAN molecular Chains. The outstanding weather ability of ASA is due to the acrylic ester elastomer. Applications DION ASA uPVC Sheet is an optimum choice for roofing & cladding in civil and industrial constructions as per the effeciency and benefits it provides. It can be used in many applications both exterior and interior. i.e. industrial Places, Commercial Places, Residential Places & Agricultural firms etc. like Factory Building, Warehouses, Market, Vehicle Parking sheds, Farm House, Water Resorts, Cottages, Chemical Industries, Animal House, Construction House, Schools, Colleges, Hotels, Sheltered Walkways, Security Guard Shelters, Roof Extensions, Summer Huts Cycles etc.