http://www.acoustiblok.com/ This is the stuff to use. But its quite difficult to install. It comes on very large rolls and they weigh a ton. I reccomend professional installation or have 3-4 people on hand. Also its importent to soundproof the doors too.
Sound proofing any suggestions
When I listen to my music I want to be sure that know one else is being disturbed, therefore I am in the process of sound proofing my listening room.Any suggestions as to what will keep the sound from going through the wall which is plaster with two layers of sheet rock that I added hoping it would make a difference. Also since I am into health I am avoiding anything that outgasses therefore no foam or smelly materials. One of my first options are fibergalss the one that is less toxic. thanks