Basement Ceiling Sound Proofing

Old 03-04-02, 11:59 AM
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Basement Ceiling Sound Proofing

I'm remodeling the basement of a ranch home and planning to use drywall ceilings. How much insulation/sound proof material and what type do I need to insure no noise will penetrate ceiling. I am putting in a home theater with surround sound as well as a pool table. Since it's a ranch the bedrooms, living room, and den etc. are directly above the basement.

Suggestions would be appreciated. Thanks in advance. Scott
Old 03-04-02, 06:20 PM
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There's no way to soundproof. So you'll have to settle for coming close. Put as much acoustical insulation as fits without compressing. Acoustical insulation is not sold in most home improvement centers, so you'll probably need to find an insulation supply house. Then attach the ceiling drywall to aluminum resilient channels that hold the drywall away from the joists. Use 5/8" drywall on both the walls and ceilings for greater sound absorption. Use solid core doors. Build two separate walls separated by an inch and insulate both. Make sure no heating ducts are shared between floors.
Old 03-05-02, 09:30 AM
Buffalo Dave
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I've seen two different solutions to cut down on noise. (You'll never make it totally soundproof). I've seen people use cardboard egg cartons. The cone shape of the carton bounces the sound within the cone and deadens it. I know this requires alot of egg cartons but most egg/chicken farms will sell you the cartons for pennies. You would just staple the carton with the cones pointing down. Secondly, I've seen a product called "Sounddown" used. This you'll only be able to get from a gasket / seal manufacturer or a marine dealer. This is used to surround an inboard motor on boats. It absorbs sound and will help/ not sure of cost. I've been in basements using both and have noticed they do work.
Old 03-06-02, 11:02 AM
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Originally posted by John Nelson
Then attach the ceiling drywall to aluminum resilient channels that hold the drywall away from the joists.
can you explain why?
is this standard practice, or just for this case?
Old 03-06-02, 11:39 AM
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Recording studios use sheets of an egg carton shaped rubbery-foam type of wall application to reduce noise.
Old 03-06-02, 11:43 AM
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Check out this link on home soundproofing:
Old 03-11-02, 02:42 PM
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LZ, Resilient Channels are used primarily as a sound proofing technique. They prevent direct contact between the drywall used for the ceiling and the joists for the floor above you. With drywall attached directly to the overhead joists or even wood furring strips, a lot of sound is transmitted through the drywall and channeled into the joists then through the floor to the room above. The resilient channels create a space between the drywall and the joists, thus reducing the amount of sound that is transmitted through your ceiling material into the joists and to the room above.
Here's another thread on this subject here in the "Basements" board.'s. In this thread, someone put a link to another web site with a great explaination of using Resilient Channels.

Old 03-12-02, 07:59 AM
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There is lots of good information on reducing sound transmision in this peice called Acoustics 101 from Auralex. It's targeted at recording studios but the information can be applied to residential construction.

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