Structural Insulated Panels (SIPs) are engineered building materials consisting of an insulating foam core sandwiched between two structural facings, typically made of oriented strand board (OSB) or plywood. SIPs are known for their energy efficiency, strength, and speed of installation, making them a popular choice for residential and commercial construction. They provide excellent insulation, reducing heating and cooling costs while maintaining structural integrity. At Westman Lumber Supply, we offer a variety of SIPs designed to meet energy efficiency standards and construction needs.