dampening basement ceiling below a bedroom - AVS Forum
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post #1 of 5 Old 09-18-2012, 08:37 AM - Thread Starter
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I'm trying to sound dampen a basement space situated directly below my bedroom. The room is eventually going to be for my kids to hang out, but for now, has a wicked good stereo set up.

I have no plans of modifying the basement other than fixing the ceiling issue, because we could easily have another 3 day rain that floods the basements in this town.

If I can stop sound from traveling up through the floor below the bedroom, I've done the job. If I like the result I'll extend the other parts of the ceiling. So far I've lined the ceiling with safe'n'sound rockwool and installed some recessed lights. I have a two radiator pipes running up to the bedroom and a few of those recessed lights to deal with.

How should I finish this up? RC with DD and GG was the plan, but now that I've got all those pipes and lights I don't know what to do. I really can't find any good resources on installing the ceiling with details on how to join it to the walls, which are concrete on two side in this situation.

After this is done, carpeting the bedroom will be next, if needed. I suppose carpeting needs to be wall to wall to be most effective?

Also, neighboring the bedroom is a hall and bathroom. By only dampening the basement ceiling below the bedroom am I going to get huge leakage from the bathroom? If you suspect so, I can easily enough extend the project to do the ceiling below part of the hall adjacent to the bed/bath and below the bath.

Thanks for your input/advice. Links would be appreciated.
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post #2 of 5 Old 09-23-2012, 08:22 AM - Thread Starter
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Hi, if nobody here has any idea what to suggest, can you possibly suggest a tried and true method for really effective dampening? There's a lot of propaganda out there!

Thanks.
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post #3 of 5 Old 09-23-2012, 08:53 AM
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I had a similar issue in my last basement, except the room above was the living room and not a bedroom. I basically insulated the space and then covered it with 2 layers of drywall. That helped with about 90% of the sound transmission, and I was limited to just the issues coming through the duct work. If you're able to add some flexible duct work with a few turns in it, that should help.

Jason


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post #4 of 5 Old 09-24-2012, 07:28 AM - Thread Starter
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Thanks for your feedback MN dude. Can I ask, did you attach the drywall to the ceiling joists directly or did you use RC? Also, anything between the drywall, or just a double-layer?
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post #5 of 5 Old 09-24-2012, 07:33 AM
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You'll get some added benefits with RC channels and GG between the layers, but for me the cost wasn't worth the marginal improvement. I attached the drywall directly to the joists and the 2nd layer directly to the 1st.

Jason


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