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Anonymous Poster

Soundproofing a Basement

12/06/2006 9:14 AM

My kids have LOUD electric guitars and a concert quality (used) very LOUD drum set in the basement (sounds like we're living over a bar, half the time). They want (I do too as you can imagine) to make a sound proof recording studio in one corner of our basement with an area of approximately 12' x 12' or so. Two and a half walls currently are finished with dry wall materials, so we need to enclose the rest of the space. The biggest issue is that they already removed the "drop ceiling", so the ceiling/floor joists are completely exposed in anticipation of sound proofing the ceiling.

Q. What materials will work best in the ceiling to completely (as much as possible) isolate the sound from the rest of the house, provide decent recording quality and yet leave terminite inspection access (previous owners had to treat the house for these pests) at the ceiling edges? I expect some sort of ceiling panels might work. Is there some sort of fiber board available at decent cost that should do the trick? Would we also need to add roll type insulation between the joists, (I assume above the panels)? What do you recommend for the walls? Any web sites recommended (I admit, I've done a cursury look, didn't find much). Thanks!

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#1

Re: Soundproofing a Basement

12/06/2006 11:49 AM

Definitely staple some r19 or so insulation up between whatever joists you can. A visit to your local home building store should point you in the direction of some good acoustic suspended ceiling tiles. Look for the NRC or noise reduction coefficient.

http://www.extremehowto.com/xh/article.asp?article_id=60315

Good luck.

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#2
In reply to #1

Re: Soundproofing a Basement

12/07/2006 3:30 AM

We have had to do a lot of noise reduction on the cheap! Get enough perforated metal trays, Aluminium is best, about 2" thick, fill with rock wool and fit to the walls and ceilings. Hardest bit is the panels! We found this gave a reduction from 110 Decibels down to 85, placed around a power press.

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#3

Re: Soundproofing a Basement

12/07/2006 5:01 PM

Sound is energy, or pressure waves in air. Anywhere that you allow air to flow or move, sound can travel. You can only stop sound basically in two ways, reflect it or absorb it. Depending on the frequency or wavelength of the sound, one or the other method is more effective.

There is a company that makes sound absorbing material that can be installed like drywall, that provides incredible attenuation of the sound. I have attached their website below. Fiberglass and rockwool type insulations are only nominally effective at removing sound.

http://www.soundivide.com/

Good Luck!

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#4

Re: Soundproofing a Basement

12/07/2006 5:19 PM

Start saving egg cartons and ask all your friends to do the same. The band members parents should contribute as well.

Egg cartons make an excellent sound trapping wall and ceiling liner, as long as you opent them and use the inside facing the sound, not the outside. Not sure if paper or plastic foam makes the best.

You can buy similar material used to line anechoic chambers, but I think it is fairly expensive. Egg cartons are free.

Use this as an extra layer on top of whatever other insulation you use. You would be surprised just how much wallboard (sheetrock, gypsum, etc.) alone can keep from getting out. So just build a "room" and insulate it well as if it was an exterior wall, then add the egg cartons inside. Foam board can help also, between the sheet rock and the egg cartons.

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#8
In reply to #4

Re: Soundproofing a Basement

02/05/2007 10:07 AM

This technique worked successfully to deaden the sound in a student radio broadcasting station as installed in 1976. The only requirement at that time was to treat the egg boxes with theatrical scenery fireproofing fluid.

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#5

Re: Soundproofing a Basement

12/07/2006 5:29 PM

When I was faced with a similar situation not so long ago, the best answer I got was "QuietRock - good stuff!".

Check out http://www.quietsolution.com/index.html and click on the link for the QuietRock. I hear it's a bit pricey, but it's supposed to be excellent and would likely do what you want.

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#6

Re: Soundproofing a Basement

12/07/2006 9:00 PM

The solution to reducing sound transfer is mass. If you use a combination of flexible layers and lead sheeting, the sound energy will be absorbed in moving the lead. All the other stuff can help too so fill joists with anything that moves (and therefore absorbs energy), like foam, shredded paper, fibreglass, plastic bags full of water but not tight, and soft fibre board or cork on top as well. Then cover walls and ceiling with that really cool black foam with spikes as shown in the spaceship interior in "The Man Who Fell to Earth", one of David Bowie's early movies. I believe that this is commercially available. Test the ambience of the room with loud music after each layer is installed, and finally, hang a lot of thick soft moving blankets from the ceiling in a labrynth. Have you evaluated alternative solutions like confiscating the equipment, renting a warehouse, moving to Hawaii so they can play outside away from the house?...

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#7

Re: Soundproofing a Basement

12/08/2006 12:15 AM

Egg carton's good. You could also try this:

It's foam and the "hills and valleys" increase the surface area, giving a much better absorbing capability than flat foam. This particular one is available from RS Components. Just google to get their website.

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#9

Re: Soundproofing a Basement

04/14/2007 3:37 AM

All you have to do is go to www.csoulpro.com, call Chris on the contact us page, and all your needs will be met !

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