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    If you're sheetrocking your ceiling you want to minimize contact between the rock and the joists to minimize sound transmission. Hat channel is the easiest way to do this. The hat channel runs perpendicular to your joists and your rock is screwed to the channel, not the joists. If you're sheetrocking walls in your basement I'd really recommend resilient channel on the walls as well. If you rock straight to the framing you will do very little to soundproof the space because the sound vibrations go right through hard surfaces, and limiting those surfaces' contact will do a lot.

    My drop ceiling has been pretty effective. My shop is below the living room. I can use the lathe, drill press, bandsaw and other tools without disturbing anyone upstairs. They can still hear it, but not to the point of it being irritating. The planer and router are not something I can use after the kids go to sleep, as they're appreciably louder.

    Hope this helps.
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    Brad, sorry for the delayed reply to your question about soundproofing. If you have the headroom, I really suggest a drop/grid ceiling. In my shop I did a drop ceiling with decent quality (albeit inexpensive) ceiling tiles with a STR (sound transmission rating) of 50. That means that 50% of the sound that gets to them does not get past them. So that system alone cuts the noise in half. Comparatively, insulating the joist spaces with fiberglass or rock wool batts will not do much of anything, but can't hurt. I insulated my joist spaces with 10" thick fiberglass batts. I also furred down around the main duct and return air trunks and rocked the framing on hat channel so there would be less sound transmission to them.
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About Brad Swanson

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About Brad Swanson
Madison, WI


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02-07-2011 6:04 PM
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