... , 3.HIGHLY WATERPROOF, 4.LONG SERVICE LIFE. EPS sandwich roof panel:Technical functionUnitIndexQualificationFibre averagediameterμ m4-7GB/T13350-92Densitykg / m ... 11.8m3. Usage: It can be used as roof panel of workshop, factory, prefabricated home, storage, villa and ... bricks, clay solid bricks, air bricks, color-coated steel sandwich boards, gypsum blocks, wire spatial grid structure perlite boards, ...