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Hobiedog 11-08-2007 05:31 AM

Insulating walls between attic & heated area
 
I need to re-insulate some second floor bedroom walls that back up to the second floor attic space. These are normal stud walls. The original insulation was installed with the paper facing the attic and they just stapled the paper to the studs; there are some gaps, insulation falling out, and the paper is deteriorating. I want to install it correctly with the paper against the sheetrock, so how do I keep insulation in place? If I put the paper against the sheetrock, I can't easily staple the paper to the studs. I thought about getting some plastic drop cloth and cutting it into strips, say 18" wide, placing it between the studs, then stapling the 'overhang' to the studs. Then I could reverse the insulation and staple the paper to the studs. However could I trap moisture in there? Is there an easier way?

Sammy 11-08-2007 06:21 AM

I assume that the drywall is still in place and your trying to do all of this from the attic side.

I would cut the insulation with a snug fit... Pull back the insulation at the top of your run leaving the paper exposed to make sort of a stapler tab at the top. Face the vapor barrier to the drywall as normal and push it into place.
Then take some nylon or other synthetic string and staple a continuos "Z" all the way down your insulation to the studs. Compress it slightly as you go just as if you were hanging it in a underside application.

I wouldnt do it with a vapor barrier on both sides. Moisture will have no place to go.

AtlanticWBConst. 11-08-2007 07:49 AM

Quote:

Originally Posted by Sammy (Post 72502)
....
I wouldnt do it with a vapor barrier on both sides. Moisture will have no place to go.

That is also against building code...

Hobiedog 11-08-2007 10:38 AM

Thanks guys
 
Great idea Sammy. I'll try that.

Sammy 11-08-2007 03:56 PM

I have done it before [today] and it works pretty good.

Good luck!


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