QEP's Natural Cork Underlayment is an outstanding sound barrier for all types of flooring. Besides being an environmentally friendly option, cork is also a healthy choice. It's naturally hypoallergenic, as well as mold and mildew resistant. Natural Cork Underlayment reduces sound transmission and helps protect flooring from the transfer of subfloor stress cracks. It also reduces thermal transmission, making it ideal for use with radiant heat systems. QEP Natural Cork products are FloorScore Certified for healthier indoor air quality and may contribute towards satisfying credits under the LEED Green Building Program.