To achieve the most realistic stone looks, this collection employs a 4-sided painted bevel for added depth in yet another innovative evolution in WPC. The appearance of these tiles is backed by the patented COREtec® technology featuring their innovative COREtec core structure, which is an extruded core made from recycled wood and bamboo dust, limestone, and virgin PVC. Since COREtec is 100% waterproof, COREtec Plus Enhanced floors can be installed in wet areas and will never swell when exposed to water. COREtec is inert and dimensionally stable, meaning it will not expand or contract under normal conditions. COREtec never needs expansion strips in large rooms. Plus Enhanced plank or tile has an attached cork underlayment for a quieter, warmer vinyl floor that is naturally resistant to odor causing mold and mildew.