SPC (stone polymer composite) and WPC (wood polymer composite) are the two main core types in luxury vinyl plank, and each has distinct characteristics that suit different needs. SPC cores contain limestone mixed with vinyl, creating a dense, rigid plank that’s extremely dent-resistant, highly stable in temperature fluctuations, and typically thinner (around 4-6mm). It feels firmer underfoot and works exceptionally well in high-traffic areas, commercial applications, and homes with heavy furniture. WPC cores contain wood pulp mixed with vinyl, resulting in a thicker, slightly softer plank (around 5-8mm) that’s more comfortable to stand on for extended periods, provides better sound absorption, and offers enhanced thermal insulation. Both are 100% waterproof and suitable for moisture-prone areas. For Wake County and Horry County homes, we typically recommend SPC for main living areas and kitchens where durability is paramount, and WPC for bedrooms and areas where comfort underfoot matters more. The choice really comes down to whether you prioritize maximum durability or enhanced comfort.