3 layer Heat Insulated UPVC Roof Sheet, manufactured based on 3 layer co-extrusion technology by one-off processing, is an ideal building material for construction projects with heat insulation requirement.
The advantage of the PVC roofing sheet is the translucency of the panels.They allow daylight to enter through them. If cost is a factor, PVC roof sheet is a cheaper alternative to sheet metal. PVC panel will block out the heat from the sun much more effectively than sheet metal, which will act like a radiator.
3 layer PVC roof sheet is made by the production processing technology called co-extrusion. Due to this processing, the roof sheet can offer multiple functions, with each layer has its special feature.
PVC roof sheet is the most popular among customers because of its good features and competitive price. They are widely used in carport, depot, gazebo, warehouse, wall cladding, farm land, airport, station...
◪The purlins support the panels. If you are placing PVC sheets over an existing roof, you still use purlins. The purlins not only give you something other than the existing roof to accept the roof sheet fasteners, they also create an airspace between the roof sheets and the existing roof. Without the purlins, the roof sheets would sit directly on the existing roof, you would get moisture building up under the roof sheets.
◪Roofs aren't for standing on. There's a good chance you'll damage a corrugated roof by standing on it. Therefore, when installing PVC roof sheet, we’d better step on the position where supported by purlins or trusses.