... and foundation13Wall board75mm EPS panel, 0.35mm steel sheet, 13kg/m3 polystyrene density. Heat Insulated coefficient is 0.041w/m.k ... .14Roof board75mm EPS corrugated panel, 0.35mm steel sheet, 13kg/m3 polystyrene density. Heat Insulated coefficient is 0.041w/m.k ... size of 4000mm*4000mm18Window (W-1)PVC, white color, with dimension 1200*1200mm, glazed with glass in a thickness of 5mm ...