Insulated panels (sandwich panels) are made of polyurethane (foam) injected between two sheets of steel. Insulated panels (sandwich panels) are widely used as ceilings, walls and garage doors. In modern construction projects, they frequently use insulated panels (sandwich panels) due to their high level of thermal insulation, in addition to being quick and easy to install and available in a variety of colors. Polyurethane (foam) is a very good rigid insulating material which does not absorb water and does not support bacterial growth. Therefore, it is the ideal solution for food storage or production facilities, factories, refrigerated storage rooms, etc. Moreover, rigid foam made from polyisocyanurate (PIR) enhances thermal stability, increases fire resistance, improves chemical resistance and dimensional stability compared to saturated polyethylene foam. Advantages of insulated panels (sandwich panels)