Making a garage a den, insulation question


Old 03-29-02, 07:26 AM
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Making a garage a den, insulation question

(posting this question for a friend):

I have a question about closing in my garage. There's no insulation on the outside walls of the garage and we're putting up new drywall and installing insulation.

Now, I dont want this thing to be soundproof or anything, but I would like to play music semi-loud and not have the whole neighborhood be able to hear it like they do now.

I went to Lowe's hardware and saw that there were several grades on insulation (R13, R25, etc.) Does anyone know which one of these would be good for me? Im a college student and we tend to get kinda loud, and play music (paradigm studio 40's). The walls are all about 4" thick, and the whole house is wood. The garage is 17 x 12 feet.

IF anyone knows anything about those levels of insulation, please advise or maybe link me to a page where I can read about it. It would be appreciated.

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Old 04-05-02, 11:06 AM
Conserve NRG
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Hi Jonre,
It should be common sense that the thicker the insulation barrier the more sound proof your walls are.
With that in mind we must now think of how much insulation your walls will allow to be installed.
Common 2"x4" stud walls efficiently allow an R-11 faced fiberglass to be installed. However, with a little compression you may be able to install an R-19 faced fiberglass into the open stud cavities.
Just remember the more you compress insulation the less effective it is.
Remember, if you are going to install faced fiberglass, to install it with the facing (paper) towards the living area.
Old 04-05-02, 11:34 PM
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R - 13 is your best bet for sound control

Also when installing the drywall... upgrade to 5/8 X type installed on resilent metal J channel every 2 feet horizontally

not alot more work using J channel but much more effective at stopping vibrations from passing through walls.

Hope this helps---Josh
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