Auralex SheetBlok Roll of Mass-Loaded Vinyl Dense Sound Barrier, for Walls, Ceilings, Floor - 30' x 4' x 0.125" - 120 sq ft Dense, limp-mass vinyl material that is about 6dB more effective than solid lead at stopping the transmission of sound Service Temperature: -40 to 180 F Helps stop transmission of sound room to room Solid pigmented, highly filled vinyl (EVA) 1lb/ft2 noise barrier, smooth surface with a matte sheen. May be doubled for improved isolation. Is resistant to oil, grease and most solvents. For best sound isolation, Auralex recommends incorporating the following products into your room construction in the options shown above Most effective when used as a component of multi-layered sound barrier construction