Two types of rigid core luxury vinyl are Stone Plastic Composite (SPC) and Wood Plastic Composite (WPC). When it comes to SPC vs. WPC flooring, it is vital to note that while both share a variety of traits, there are differences between the two that should be considered when deciding which will work best.

The makeup of WPC and SPC is relatively similar, though SPC consists of far more calcium carbonate (limestone) than WPC, which is where the “S” in SPC stems from; it has more of a stone composition.

SPC, which stands for Stone Plastic (or Polymer) Composite, features a core that is typically comprised of around 60%-70% calcium carbonate (limestone), polyvinyl chloride and plasticizers.

WPC, on the other hand, stands for Wood Plastic (or Polymer) Composite. Its core typically consists of polyvinyl chloride, calcium carbonate, plasticizers, a foaming agent, and wood-like or wood materials.

Because SPC’s core layer is comprised of limestone, it has a higher density in comparison to WPC, though is thinner overall. This makes it more durable compared to WPC. 

Its high density offers better resistance from scratches or dents from heavy items or furniture being placed on top of it and makes it less susceptible to expansion in cases of extreme temperature change.