A sandwich puf panel functions as a building made of three layers low density core inserted in between two relatively thin skin layers. This sandwich setup allows achieving excellent mechanical performance at minimal weight. The very high rigidity of a sandwich panel is achieved thanks to interaction of its components under flexural load utilized on the panel core takes the shear loads and creates a distance between the skins which take the in, The other in compression, One skin in tension, Plane stresses. Sandwich panels are assembled roof and wall elements that have excellent insulating characteristics as a outcome of the integration of insulating material. They consist of two thin metal cover sheets, Which are shear, Resistant and are bonded to one another on an insulated core. The insulated cores normally consist of rigid polyurethane foam puf to fulfill the fire prevention requirements. Sandwich panels are produced by discontinuously or continuously running production processes and cut to ordered lengths. The surfaces can also exist of lined, Trapezoidal or grounded in, Corrugated profiles the customer s requirements. Features thermal resistance acoustic insulation mechanical properties fire behaviour resource efficiency energy efficiency sustainability applications industrial buildings public buildings offices and administration buildings cold storages clean rooms agricultural buildings power plants residential houses