R-13 Into Interior Wall (new Wall At Bottom Of Basement Stairs) Paper Direction? - Insulation - DIY Chatroom Home Improvement Forum

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Old 10-15-2015, 11:58 AM   #1
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R-13 Into Interior Wall (new wall at bottom of basement stairs) Paper Direction?

I built a wall at the bottom of my stairs to the basement (and a door of course that is surrounded by the wall).

Does it matter which direction the paper faces regarding the R-13 Pink Insulation I am installing?

They say that the "paper side" should be on the "inside of the home" side so that the pink insulation/unfaced side is facing the cold and the "paper" side is facing the inside of the home. The basement in my case is cold so I assume
the pink side should face the basement and the paper side should face the stairs?

Also, for sound proofing, can I fit two layers of 3.5 inch insulation in between the 3.5" (2 x 4) studs instead of one 3.5" R-13 layer for the walls?
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Old 10-15-2015, 12:56 PM   #2
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Barrier faces the warm side.

Two layers of insulation will do nothing for sound proofing.
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Old 10-16-2015, 09:44 AM   #3
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Sound proofing is more about addressing the vibrations via framing members.

More insulation, unless it goes over the framing, won't do anything.
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Old 10-16-2015, 04:48 PM   #4
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I agree, thickness of the wall vs. density, pp.3:http://www.certainteed.com/resources...%20Control.pdf

"Warm in winter side", works for all climate zones.

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