PRO Sound Protect – is a physically crossed-linked closed cell polyolefin foam. The underlay is manufactured without CFCs (Freon) and HCFCs (hydrochlorofluorocarbon), contains neither plasticizers nor heavy metals or other hazardous substances. The underlay is applicable for laminate floating floors and parquet floorings. Features: Ideal impact sound improvement. High compressive strength. Very low thermal resistance and thus ideal for underfloor heating. Punctual conformability to even out unevenness of subfloor.