WPC (wood plastic composite) core
PC is the first rigid luxury vinyl plank, designed to compete with tongue-and-groove, prefinished hardwood floors. A top wear layer of polyurethane , measured. The core is typically made of polyvinyl chloride (PVC), calcium carbonate, plasticizers, and a foaming agent. The tongue-and-groove edges (and a textile stability layer, if present) are part of the core. Last, a backing, or underlayment , often cork, adds softness underfoot and helps dampen sound transmission. While adding a WPC core made luxury vinyl floors more DIY-friendly, the knock against them is they can dent under very heavy furniture.
