Sandwich Panel is a form of insulating building material that consist of insulating core which is placed between two metals. The insulating core is made from different materials such as rigid polyurethane (PUR), polyisocyanurate (PIR), expanded polystyrene (EPS), and rockwool.

Some types of sandwich panels are waterproof, soundproof, and fireproof. It is durable and environmentally friendly. It does not produce or harbour bacteria. It is the ideal building material that can be applied in all constructions such as steel, wooden or concrete constructions. The sandwich panels are used as curtain materials. In other words, the panels are fastened to either the steel framework or any other carrier that acts as the structural force of a building.