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Old 07-12-2010, 06:18 PM   #1
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Insulation Woes.....


I imagine that this will be the dumbest sounding question but here goes....

I recently bought a house after the first one I was going to buy fell through. I of course stupidly got ahead of myself and pre ordered my insulation (Roxul R20) as it was cheap and I got a bit of a deal.

Turns out however that my new house is 2 x 4 construction and not 2 x 6.
So, here goes my query....

Do I have to really extend my joists by 2 inches or can I trim down the Roxul by 2 inches guessing that the R value would then be about R14?
I know that it would be best to extend them - I'm just looking for a short cut cos I have so much else to do.

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Old 07-12-2010, 08:30 PM   #2
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Insulation Woes.....


Is R-14 adequate for your region?
Ron

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Old 07-13-2010, 07:52 AM   #3
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Insulation Woes.....


I have got to imagine that you know the answer. I think for your own savings on heating bills in the future it would be worth buying a few 2x2 and strapping the walls. It's a small price to pay up front.
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