For any kind of multiwall sheets, you can approach us as we are the renowned polycarbonate sheet manufacturers and polycarbonate sheet suppliers, who have been delivering a wide range of roofing solutions to clients for more than a decade now. An alternative to glass at lighter weight and more affordable, polycarbonate multiwall sheets are used primarily as cladding, roofing, for skylights, sheds, greenhouses, and verandas. 6mm and 8mm twinwall and 16mm triple wall clear polycarbonate multiwall sheets available in stock and ready to ship, these materials are finding broader ... 10mm Twinwall Corotherm is a light weight, impact resistant polycarbonate roofing and glazing sheet available in clear and bronze. Available in full sheets and cut to size. It is guaranteed for 10 years. 6mm polycarbonate sheets have 5-10% less light transmission than 4mm ones. This might sound like a reduction in light transmission, but it is diffused by the polycarbonate, which means light gets more evenly distributed to what would be darker areas in your greenhouse. 4. Lifespan Polycarbonate Twinwall Panels Excellent insulation, ribbed configuration of the multi-walled sheets traps air within the sheet, providing outstanding thermal insulation. It is ideal for applications where specific light transmission is required.