Ecohousing Building Systems has created a unique wall panel system. The wall panels are very strong and lightweight. The panels comprise of a high pressure injection bonding of structural polyurethane PUR between sheets of fibro-cement. The polyurethane core offers excellent sound absorption and exceptional fire resistance. Panels are available in lengths of 2.4m, 2.7m, 3.0m, 3.3m and 3.6m as well as thicknesses of 80mm or 104mm, they are 900mm wide. Cladding panels are available in 60 & 80 mm with R values of R 3.01 and R 4.02.