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Old 02-08-2012, 10:31 PM   #1
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insulation options for 2x3 walls?


My home is comprised of a 70's single-wide that has evolved into a 1600sqft house with a pitched roof.

I'm taking down some of the original interior paneling and replacing with drywall - about 18' of wall. Seems like a good time to upgrade the insulation and vapour barrier. The catch is the walls are framed in 2x3, and I don't see my preferred Roxul in that thickness

Any suggestions for insulating? BTW, this is the pacific northwest...

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Old 02-08-2012, 10:48 PM   #2
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insulation options for 2x3 walls?


if its just straight walls can you fur the wall out 1-1/2 inches and then insulate? that would give you 4 inches

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Old 02-08-2012, 11:02 PM   #3
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insulation options for 2x3 walls?


That's a little further than I want to go. I'm actually only redoing my woodstove alcove, but I'm getting carried away already.
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Old 02-08-2012, 11:10 PM   #4
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insulation options for 2x3 walls?


you might check into the spray foam. i know it has a higher R value per inch than fiberglass.
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Old 02-10-2012, 12:08 AM   #5
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insulation options for 2x3 walls?


can you get along w/ adding 1x2's to the 2x3's and calling it good nuff? i would bet that Roxul compressed a tad is still better than fg batts. i'd also check on that vapor barrier. i really doubt that kentucky needs one; air seal real well, though. usually, vb's are reserved for zones 7 and 8; COLD places. read on buildingscience.com about them.
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