Stone Plastic Composite (SPC hybrid flooring) is a hybrid flooring product comprised of limestone and PVC. WPC hybrid flooring contains recycled wood and PVC and stands for Wood Plastic Composite (WPC). SPC and WPC hybrid floors are highly durable and stable; however, because of their limestone component, SPC hybrid flooring is slightly more durable and dense. WPC hybrid flooring, on the other hand, is somewhat softer and quieter underfoot.