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Old 11-19-2007, 10:22 PM   #1
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Proper inside framing/insulation/vapor barrier technique

I've read for hours and I can't find any concrete information on my situation. I'm sure it's not that far out there, or maybe I just missed the right articles.

I have a small semi-detached townhouse, built in the 1920's. Double brick outside, plaster and wood lathe inside (well, it was originally). I've gutted the main floor (about 13' x 40'), and I'm planning to frame it with 2x4's, insulate it, and drywall it. I should only lose about an inch of space, since I had 4 layers of plaster/drywall there origionally.

1) What to do before framing (if anything). Should I be wrapping the interior of the house with a tyvek type material, then framing, adding insulation, vapor barrier, and drywall? I'm confident about everything except the tyvek stuff. I have exposed brick on the walls right now (since I've gutted everything else), and it's brick all the way through.
2) If I don't need the tyvek stuff, can I just put the insulation up against the brick? Can I put the wood directly up against the brick? I thought that was a no-no.

If this was a newer house that was wrapped on the outside, I'd have no questions, but this old brick stuff has confused me...



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Old 11-20-2007, 05:21 AM   #2
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Tyvek allows a home to "breath" to an extent. You will catch a lot of differing opinions, but the action I would consider id consult with a local contractor, or your building inspector. See what they have to say about it, since they will know your climate, and be familiar with any code issues you will encounter.


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