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-   -   interior wall insulation batting (http://www.diychatroom.com/f103/interior-wall-insulation-batting-182290/)

goodyt 06-22-2013 02:25 PM

interior wall insulation batting
 
In the interest of full disclosure, I am a newbie to the site, so please forgive any faux pas in my posting.

Issue, I am acting as "owner/builder" on a new home in Angel Fire, New Mexico. As such, I am attempting to do the relatively fool-proof stuff to save money!

Most of my interior walls are 2" x 6" studs that will, hopefully, better ensure the lessening of sound transference between rooms. Ergo, my question has to do with "which size batting" (proposed Pink Panther roll) to use.

Can I (or should I) use 3.5" (R13) in these walls and install two layers, or just one layer of 6.25" (R19). I can purchase two-times the equivalent 3.5" coverage ($9.98/roll - $0.25 sq.ft.) for less than the cost of one-times the equivalent 6.25" coverage ($22.95/roll - $0.47 sq.ft.).

If I do the "2-layer" approach, will the necessary 3/4" additional compression factor destroy any gains made over using the standard 6.25" batting designed for a 2" x 6" stud wall? Sorry for the long message, and any confusion I may have created in forming the question(s).

Windows on Wash 06-23-2013 09:23 AM

The slight over compression of the R13 batt does not destroy its insulation value and actually helps it a tiny bit by making it a bit more high density.

You did mention interior walls so the R-Value question is moot anyway.

How much sound proofing are you wanting because insulation alone may not do the trick.

goodyt 06-23-2013 11:10 AM

interior wall insulation batting
 
Windows,

Thank you for your response. Of course you are correct regarding the R factor issue. It was one of those times where I was thinking along one line and writing something entirely different. I included the R factors only to further delineate which density I proposed.

My concern is about sound deadening. The house in question is a chalet-type structure in Angel Fire, NM, and, as such, will be subject to multiple inhabitants at various times.

The good news, since I am the Papa Bear in the group, of course I will be sleeping on the 3rd level (master bedroom). However, the bad news, I am a poor sleeper and routinely find myself awake (and up) in the wee hours of the night! Just trying to be considerate of the guest bedrooms on the 2nd level.

Thanks again for your response. Have a great day!

Windows on Wash 06-23-2013 02:48 PM

If you are worried about deadening the noise transmission from the upper floors, sound isolation will be via uncoupling the upper floor framing.

This done via a number of different ways and if you search around this board, there are some pretty well hashed out arguments and options when it comes to sound attenuation.

goodyt 06-23-2013 06:33 PM

Quote:

Originally Posted by Windows on Wash (Post 1206008)
If you are worried about deadening the noise transmission from the upper floors, sound isolation will be via uncoupling the upper floor framing.

This done via a number of different ways and if you search around this board, there are some pretty well hashed out arguments and options when it comes to sound attenuation.


Many thanks. I will start searching. Have a great day.


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