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Old 05-30-11, 12:18 PM   #52
S-F
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Yes! It doesn't cost much more to go super insulated. If you have a 12" wall full of cellulose the need for meticulous air sealing goes down quite a bit. Building a 12" cavity isn't too much more labor than 2x4 construction and the amount of lumber used isn't too much more than 2x6 framing. Once you start talking about 12" walls you are in a whole world of virtually non existent heating bills, great comfort and better health. Robert Riversong estimates that his methods cost no more than 5% more than regular construction. I personally like to do things a little differently so that figure probably goes up 2%.
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