... EPS sandwich panel: 1.LIGH-WEIGHTED, 2.HEAT AND SOUND INSULATION, 3.HIGHLY WATERPROOF, 4.LONG SERVICE LIFE. EPS sandwich roof panel:Technical ... : It can be used as roof panel of workshop, factory, prefabricated home, storage, villa and so on4.Advantages: Energy-saving Light ... one sixth of the brick building Comparison of inner wall panel 75 and 120mm it will increase 12m practical area, for 100m2 ...