WPCs (Wood-plastic composites) are made of wood fiber and thermoplastic while SPCs (Stone-plastic composites) are made of natural limestone, polyvinyl chloride and plasticizers. When it comes to performance, the difference is simple; WPC is softer and quieter underfoot, while SPC offers better resistance from scratches or dents. Both have excellent water resistance, hide subfloor imperfections and can handle extreme temperature challenges.