Sound Deadening Board

Macross · Post by **Macross** » Mon Sep 05, 2005 1:36 pm

So, the stinky "sound board" that you can purchase from your local Home Depot - is it any more effective than drywall at reducing sound transmission?

I cut my main room down and built a drum room. At the advice of a person with some studio construction experience, I built my single wall partition of 1/2" drywall, 1/2" sound deadening board, 2 x 4's and thick pink insulation (single partition design for space reasons), 1/2" sound deadening board, then 1/2" drywall. The isolation is pretty decent, but I fear I may have made the wrong choice by using sound deadening board rather than 5/8" drywall in the layers. The damage is already done, so any suggestions for next time would be great. Should I have done the double drywall instead?

Thanks,

Matt

Post by **sharward** » Mon Sep 05, 2005 3:00 pm

The "sound board" of which you speak is a waste of money. You can achieve better results spending less money on more of the "regular drywall" stuff. Also, what you've described is a single-frame two-leaf coupled assembly. While the two layers on each side (leaf) is better than a single layer on each side, you would have spent a lot less money and had better results mounting 2 or 3 layers of the "regular drywall" stuff on each side of a decoupled frame (either a 2x6 frame with 2x4 staggered studs on 12" centers, or a 2x4 frame on 16" centers using resilient channel on one side) with insulation in the cavity. Even better is true double frame.

Macross · Post by **Macross** » Mon Sep 05, 2005 5:58 pm

Thank you for the reply. Yes, being that space was more of a concern than total isolation, I elected to stay single partition.

Lesson learned the hard way, I suppose.