Sandwich panel is a self-supporting structure consisting of two steel zinc-coated profiles with a layer of heat retainer. It is used as roofing and walling material. Widely is used in industrial construction, shopping centres, sports complexes, chilling and freezing chambers, storage buildings and quickly erectable housing. The classical basis of heat-insulating layer (core panel) products is used mineral wool insulation materials. This material is resistant to deformation, non-flammable, has a low caloric conductibility and cost. A worthy alternative to mineral wool is polyisocyanurate foam. The advantages of this material are very low caloric conductibility, resistance to microorganisms, decay, rot and virtually unlimited service life. The main advantage of sandwich panels is a combination of the quality of products and the relative ease of its installation.