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Old 10-03-2009, 05:50 PM   #1
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insulation


Doing a DIY attic insulation job this weekend.

A couple tips I'd love to get include:

1.) I've got interior stairs in the house leading to the attic, rather than a ceiling hatch. (Makes it easy to access for storage, but harder to insulate.) The dry wall on either side of the stairs has never had any insulation on them. What's a good way to insulate these - batts?, pink board?

2.) then, I've got a chimney going thru the attic with large gaps (1.5 inches) around it. Should a chimney get air sealing around it? Do they make fire-resistant "great-stuff"? (The gap seems too wide for caulk)

Any thoughts appreciated...
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Old 10-03-2009, 06:25 PM   #2
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The insulation on the stairs will need to be covered
I'd use rolls of R15 for 2x4 wall
Then put 1/2" drywall over the insulation

My chimney is sealed, old style wall baord which is like cement
There is a great stuff that is fire resistant

http://www.greatstuff.dow.com/products/index.htm
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Old 10-03-2009, 06:42 PM   #3
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insulation


R-19 would be better. As for the space, I would rather have the roof & walls insulated, then have under the boards. Also, for the OP, you can look at placing a draft stop at the bottom edge of the door, and using V channels at the edge of the jamb to help stop heat loss, and drafts into the house. It is about taking a proactive approach in making for a better insulated home.
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Old 10-03-2009, 06:48 PM   #4
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R19 compressed in a 2x4 wall will give you R13
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Old 10-03-2009, 06:54 PM   #5
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You may want to check with your local Building Department before you drywall in your attic (an unconditioned space). The door into attic should be weather-stripped with fire and smoke rated material, and possibly the door itself. Depends on local fire codes.
Be safe, Gary
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Old 10-03-2009, 06:54 PM   #6
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Anything is better then what they already have.
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