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Old 02-27-13, 03:18 PM   #33
You Ain't Me
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In the long run outsulating is almost always cheaper due to the previously mentioned reasons. The problem with it is that you're using a ton of foam, which I personally find distasteful. Basically a good DER using no exterior foam involves a complete gut renovation and usually also something on the outside to deal with all the thermal bridging.The Larsen truss is pretty interesting though. It's a TON of work but you can still go all cellulose/no thermal bridging.
My project:

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Chipping away on a daily basis.

You know you're an ecorenovator if anything worth insulating is worth superinsulating.
S-F: "What happens when you slam the door on a really tight house? Do the basement windows blow out?"

Green Building Guru: "You can't slam the door on a really tight house. You have to work to pull it shut."
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