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Old 06-13-2014, 06:09 PM   #1
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remodeled ...walls


50+ year old brick veneer home with ZERO insulation.
I'm exposing about 40lf of exterior wall.

I want to add insulation.
My go to would be (R15) Roxul Batts

I've been told that I need to fir out the walls to fit thicker material.
It's a LOT of bother and expense I'd rather avoid.

So... what is (or should be) really required?
Thanks.
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Old 06-13-2014, 06:56 PM   #2
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remodeled ...walls


Furring it out is the right way to do.
Only other way is to have it spray foams.

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Old 06-13-2014, 07:55 PM   #3
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Quote:
Originally Posted by joecaption View Post
Furring it out is the right way to do.
Only other way is to have it spray foams.
You're leaving out a few details; such as:
-what is the minimum R value to be achieved?
-which code is that?
-is foam able to do that in 3 1/2" (vs the fir etc)

Thanks.
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Old 06-13-2014, 10:14 PM   #4
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R15 and air sealing n the sidewalls will be more than enough. You won't see an ROA on furring out the walls... and that's assuming that your attic, basement, etc are taken care of.
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Old 06-14-2014, 08:33 AM   #5
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+1 to Homesealed comments.

The brick provides pretty good thermal mass and air sealing the walls prior to installation of batts would be sufficient in my opinion.

Guess that the exterior wall does have sheathing from the picture.

Fix the attic and seal up the top plates too.
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Old 06-14-2014, 12:22 PM   #6
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remodeled ...walls


Thanks for the replies: R15 Roxul it is.

Yes... the framing has some sheathing on it,
the attic is (or will be R30 at least,
and the basement is getting 2" XPS on walls (and at band joist)
in addition to more R15 ROXUL in the framed 2x4 wall.

The money I'm saving on T&M to rip the firring strips...
will buy a couple of steak dinners.

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