soundsulate 1 lb mass loaded vinyl mlv, soundproofing barrier 4' x 25' (100 sf) click for additional options soundsulate soundsulate mlv is the superior solution over other soundproofing alternatives for blocking sound effectively. the very thin and flexible characteristics makes it a great choice for a variety of sound control applications without compromising space. it is designed to reduce noise transmission through floors, walls and ceilings. typical applications include applying over studs, joists or suspended ceilings. it can also be used as an acoustic wrap for machinery, equipment and ductwork.