The polyurethane foam used in insulated entry doors helps reduce energy costs and maintain indoor temperatures. Polyurethane foam from SK pucore is a lightweight insulating option. The versatility of these rigid polyurethane foams, along with its insulation properties, structural strength, and adhesion performance, make it a popular choice for applications where even fill is needed for a variety of different-shaped cavities or structures. Supercore™ Polyurethane Systems are manufactured based on different blowing technologies depending upon the specific application and national and international laws and regulations.