Stone plastic composite (SPC), or solid polymer core, is a type of rigid core used in vinyl flooring that is comprised of mostly limestone with a mix of polyvinyl chloride and stabilizers. Rigid cores like SPC are used in modular vinyl flooring to provide dimensional stability and rigidity. The high limestone content makes SPC incredibly dense, durable, and highly resistant to impact and indentation. Stone plastic composite is waterproof, which allows it to resist cupping and peeling. It can be installed in laundry rooms, bathrooms, basements, kitchens, and other areas prone to moisture or temperature changes. SPC rigid core vinyl flooring is installed using a floating interlocking system. It is low maintenance and its durability makes it ideal for high-traffic commercial flooring applications.