Foam glass / cellular glass prefabricated products Density 140-200 kg/m3 Thickness 30-160 mm Length and width X *X m Compressive strength 0.6 Mpa Heat conduct coefficient 0.037-0.066 W/m·K Permeability coefficient 0.007 Ng/pa*s*m Safe Temperatures -260 -- +500 Non-combustible A-grade