Using quickrete to sound proof walls?
After reading online I thought about an easy cheap alternative to lessen the noise in my garage studio room from escaping to the outside world. After the new construction the smaller space seems to echo much more than before, thus the need for more soundproofing/deadening. I though about building forms with plywood backing and filling them with readymix quickrete with wire mesh on top. After fastening the frames onto the brakets I have that will be firmly fastened to the wall in staggered pattern drywall and carpet padding will be applied on top of the plywood side of the form that would be facing toward the middle of the room thus creating a second relatively thick layer of sound deadening with roughly 1 1/2 inched of dead air space trapped between the outer and inner layer walls. Has anyone ever tried this? Thoughts, comments, suggestions welcome.
To clarify: From outside to inside I would have:
Siding - Standard Wrap and OSB - Stud- Moisture Barrier- Insulation - 5/8 Drywall - 1 1/2 inches of dead air space - Wire mesh side of concrete forms 1 in thick - concrete- plywood backing side of form - carpet padding - drywall - carpet