Also known by the generic name of PUF sheets, sandwich panel sheets are prefabricated single pieces of rigid polyurethane foam sandwiched between two metal sheets. The PUF is glued to the metal sheets, providing an insulating effect. While sandwich panel roofing sheets are popular, they also find application in walling.
Because of its construction, sandwich panel sheets have an inherent advantage used for roofing. They include:
Panel thickness available | 30mm, 40mm, 50mm, 60mm, 80mm, 100mm, 120mm |
Panel width available | 1060mm |
Panel length available | 2000mm-12000mm |
Average density | 40± 2kg/m |
Thermal conductivity | 0.024-0.03 W/m |
Temperature range | -40+800C |
Free from CFC | CFC free |
Type of foam | B1, B2, B3, PIR |
Heat transfer co-efficient | -0.022W/M2*k |
Pressure | 0.10Mpa |
Cubic Area Change | =1%(-30 C – 100 C/96h) |