ECO STEP ® is a recycled rubber flooring underlayment for sound isolation and impact noise control. The rubber material provides a resilient layer within the flooring assembly for reducing vibration noise. ECO STEP ® is a critical component in meeting International Building Code requirements for ceiling/floor noise reduction performance. ECO STEP ® passes the Federal Flammability Standard, meets CHPS standards for VOCs, and passes the ASTM C627 reliability standard for residential use.