soundproofing a basement.

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Old 06-04-08, 04:16 PM
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soundproofing a basement.

Hi everyone, nice forum you have here!
I am after advice on soundproofing a basement cheaply?

many thanks
 
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Old 06-04-08, 04:44 PM
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Do you want to soundproof the basement from noises from upstairs, or from noises within the basement? Generally adequate insulation, and isolation of noise making equipment such as speakers, etc. will help. As well as changing the angle of your walls from 90 degrees to say a trapezoid, and placing foam cones on the walls to absorb the sound. Think along the lines of sound "deadening", not "proofing", and you can improve what you have.
 
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Old 06-04-08, 04:51 PM
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thanks for the reply chandler, my project in the basement needs to keep sound away from the house above, a foam dampener sounds ideal
 
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Old 06-05-08, 09:02 AM
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I think you'll find these two links helpful:

http://www.soundproofingcompany.com/...m_construction

http://www.soundproofingcompany.com/...icles/flanking

You need to understand the potential paths for sound to travel between the room and surrounding floors/rooms, which will be unique to your situation. Address each one. The effectiveness will depend on your investment in time, planning, and materials.

Hate to send you elsewhere but you may want to check out the avsforum.com Dedicated Theater Design & Construction forum. This is a common topic there.
 
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Old 06-05-08, 09:31 AM
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agreed. Checkout the AVS forums on theater building.

What you will find there, in a nutshell, is that a double layer of 5/8 drywall is the most bang for the buck there is.

Is your room already finished? If so, adding a second layer of 5/8 DW to exisitng 1/2 would still be good 9more mass=better). If not finished, then add a layer of R19 insulation (regular old pink stuff) in the ceiling and build stud walls away from the foundation walls. If possible on the open joists, run some stringers perpendicular to the joists and then hang the drywall.

Soundproofing a residence is nearly impossible. Sound containment IS possible. Contrary to popular belief, "sound board" is no better than 5/8 DW and the DW is cheaper. Same with the brand name DW sandwiches. Although they DO work, they are far more expensive than the regular DW, and harder to get.

Also, seal any/all leaks in the walls. Think of it like an aqaurium. ALL sides must be COMPLETELY sealed to stop water from getting out. ANY leaks and water can escape. Same with sound.

I don't agree that adding foam cones on the wall will acomplish what you want. Those and not building the walls square are more for tuning the sound IN the room and will not actually stop sound from getting OUT.

Good luck,
Tom
 
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Old 06-05-08, 02:15 PM
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Tom, that was intended to be a little tongue in cheek, regarding the cones. Although it would not be practical in the OP's use, those methods do work in other situations. We have built practice rooms for instrumentalists at high schools and the walls are trapezoidal and have small foam cones. The instrumentalist can hear pure sound, and it doesn't penetrate the walls. Thanks for your comments, though. Maybe the OP can get good results from the other dedicated site.
 
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Old 06-06-08, 12:56 PM
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It is such a huge issue that you can never truly say that anyone thing will always work better than another in any given situation. It pretty much comes down to researching and using the best practices, then going from there.

Agree, I hope the OP checks out the other forum and reads up on what he's trying to accomplish. It's pretty amazing the things that make it worse rather better. It's not always intuitive.
 
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Old 07-20-08, 12:26 PM
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Thanks ive done that, i need to build some stocks next
 
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