Coretec Plus XL color Atlas Oak is the largest LVT plank on the market, COREtec Plus XL is in a category all its own. Rigid plank technology allows easy handling and installation making COREtec Plus XL a great alternative to glue down LVT, solid locking LVT, or laminate flooring. The patented construction of COREtec Plus XL features our innovative COREtec core structure, which is an extruded core made from recycled wood and bamboo dust, limestone, and virgin PVC. Since COREtec Plus products are 100% waterproof, they can be installed in wet areas and will never swell when exposed to water. COREtec Plus XL is inert and dimensionally stable; it will not expand or contract under normal conditions. Further, COREtec Plus XL never needs expansion strips in large rooms. Each COREtec Plus plank has an attached cork underlayment for a quieter, warmer vinyl floor that is naturally resistant to odor causing mold and mildew. COREtec Plus XL is GREENGUARD GOLD Certified for Indoor Air Quality to help keep your home healthy and happy.