COREtec Plus XL is a 100% waterproof collection. With new technology this economical collection is a durable alternative to glue down LVT or laminate flooring. This product will never swell or expand under normal conditions. This product is made from recycled wood, bamboo dust, virgin PVC, limestone, and backed with a cork underlayment. COREtec Plus XL holds a residential, structural, waterproof, petproof lifetime warranty. COREtec products are also environmentally friendly; they are Greenguard Gold Certified for Indoor Air Quality.