The Embossed in Register and enhanced bevel gives COREtec Plus HD a very realistic, one of a kind look. COREtec Plus HD is 100% waterproof. It will not swell or warp when exposed to moisture. The product is constructed from recycled wood, bamboo dust, limestone, and virgin PVC. COREtec products are also environmentally friendly; they are Greenguard Gold Certified for Indoor Air Quality.