Mass Loaded Vinyl (MLV) also known as rubber damper sound barrier, is a limp-mass material used to block unwanted noise and reduce sound transmission without reducing space. Constructed out of non-reinforced high temperature vinyl with no lead fillers, this material is as heavy as lead, yet is as safe and can easily be cut with a utility knife or cutter.
Mass Loaded Vinyl called Noise Block is used for soundproofing walls, doors, ceilings, ducts and pipes. This can also be used for car sound proofing. It is a very easy to use acoustic sound barrier that provides effective sound proofing for a wide variety of sound control applications.