Envirolite’s Silent Surface line of flooring underlayment offers the security of buying direct from the factory.  Every grade is made of high-quality polyethylene foam. Customer satisfaction and safety always comes first when manufacturing a product, therefore, Silent Surface contains no VOC’s, is non-allergenic, and is mold and mildew resistant.  Silent Surface helps eliminate minor subfloor imperfections and is safe for use with radiant heat flooring systems.