Sandwich-system. Materials and constructions

Sandwich panel is a modern three-layer construction material, which consists of two galvanized profiled steel sheets, and insulating material enclosed between these sheets. Depending on the purpose, there are wall and roofing. Used as wall and roofing materials in the construction of industrial, retail facilities, sports complexes, prefabricated buildings, and are used in refrigeration and freezers. As the basis of the insulating material used rock wool, polypropylene, polystyrene, polyurethane foam and fiberglass. The main qualities of the sandwich panel can be attributed to the resistance to deformation, low thermal conductivity, environmentally friendly, easily transported, soundproofing and relatively low cost. The disadvantages of this material is the low bearing capacity, seepage of cold air in the joints, destruction of the “core panel”, which subsequently cracks appear between the plates. Technology of installation of sandwich panels is lighter and differs significantly from the installation of reinforced concrete walling.