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insulation and wood shingles


1735saltbox's Avatar
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Join Date: May 2005
Posts: 88

11-18-05, 08:44 AM   #1  
insulation and wood shingles

I just completed an adddition on my house which includes a cedar shingle roof on 1x4 skip sheathing. I'm getting ready to insulate the roof which has double 2x8s. I was planning to use the fiberglass batts and have 2 questions. First, do i need to do anything to insure good air circulation (i can't add any vents) other than leaving a 2" pocket just below the sheathing. Also, what should be done regarding a vapor barrier ? Thanks

 
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Concretemasonry's Avatar
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Join Date: Mar 2005
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MN

11-18-05, 10:01 AM   #2  
insulation and wood shingles

Vapor barrier toward the heated side (inside).

Ventilation helps any roof last longer.

If you are in a cold, snowy climate, you could be asking for a lot of trouble with no additional venting. You may not see leaks but you can get wet insulation that does not dry out.

Dick

 
1735saltbox's Avatar
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11-18-05, 11:07 AM   #3  
Thanks
I'll see what I can think of, maybe leave some breathing room at the fascia board

 
1735saltbox's Avatar
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11-18-05, 11:30 AM   #4  
would it make sense to put some sort of vapor barrier on the top side of the insulation as well ?

 
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