Author Topic: "soundproofing" a small room in townhouse - thoughts/comments  (Read 4133 times)

bstullkid

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After researching online I have come up with the following overhead cross section and wanted to see if it's a sound approach(punned). The room is currently drywall/concrete. Will just a row of 2x4's with some plywood and carpet work as a floor/base for this, and then maybe set it up on some kind of vibration absorbing pads?  Not sure about ceiling, I figure I would just complete two of the walls, then build the ceiling just like one of the walls and throw that up on top then finish the other walls(it's a somewhat small place so I figure this will be the only way I can get a roof thrown on the top of my cube.  Going to attempt to do it on my own as it will already be somewhat expensive without hiring a contractor. Also for the vent on top, can I just attach that to the existing vent that is on the real ceiling? then cut another vent as shown in the picture as "upper wall vent"?Any tips/experiences much appreciated.
http://i51.tinypic.com/2crlpux.jpg

Randy S

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Re: "soundproofing" a small room in townhouse - thoughts/comments
« Reply #1 on: June 01, 2011, 09:18:21 PM »
It would be best if you give me a call so we can discuss the particulars.

Direct
760-752-3030 ext 104

Randy S.
Randy Sieg

Super Soundproofing Co
www.soundproofing.org
888-942-7723
Ph. 760-752-3030
Fax.760-752-3040

bstullkid

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Re: "soundproofing" a small room in townhouse - thoughts/comments
« Reply #2 on: June 10, 2011, 06:38:25 PM »
I think I've got it all planned out (I will be buying some of the cotton fiber) Question - Will regular vinyl like floor vinyl provide some STC? looking for a substitue on the MLV since it is SO expensive to ship.

My plan:

8 inch wide frame using staggered studding (4 walls/ ceiling)
1 layer of insulation
MLV or less STC vinyl material attached to drywall side of studs (inside wall side only)
accoustic/vibration tape on outside of vinyl connected to studs (inside wall side only)
2 layers 5/8" drywall using green glue on both outside and inside wall (staggered/overlap assembly)
accoustic caulk everywhere
floating floor not attached to rest of frame separation by vibration pads on the floor and against the drywall/frame of the floor

similar constructed ventillation box with intake and outtake fans.

Will post pics as  I go to share my experience.

Randy S

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Re: "soundproofing" a small room in townhouse - thoughts/comments
« Reply #3 on: June 10, 2011, 06:57:11 PM »
Your plan has merit, however the flooring vinyl will not even come close to real MLV and I cant imagine how many layers it would take to equal the density value of our MLV which is 1.97 (4-6 layers of 5/8" drywall).
I would say that you would have a better result using a couple extra layers of drywall. So double your sandwich system. total layers of 5/8" drywall = 6 (drywall /green glue/ drywall / green glue / drywall) using 2 tubes per 4' x 8 ' in each sandwich. for single sandwich use 3 tubes per 4' x 8' sheet.

Offset each layer so seams dont meet.
and interleave the corners. shown here >   http://soundproofing.org/images/wall_2d.jpg

 

Randy Sieg

Super Soundproofing Co
www.soundproofing.org
888-942-7723
Ph. 760-752-3030
Fax.760-752-3040