Does roofing tar paper act as a vapor barrier and how many layers?
I am re-roofing a cathedral ceiling house. Looking up it has 2" tongue/grove pine resting on 4x6 joist beams (5') centers running to a ridge beam. I have done the tear off - and the 2" pine is the ceiling on the bottom side and existing decking on the top side. The pine is the only thing up there now. It's a tight fit. 3/12 pitch - Southern Michigan.
I want to insulate, ventilate if necessary, and re-roof.
What materials should I use?
What is the order of the layers needed?
Can I lay down a layer of roofing paper on the top of the pine to protect it while I make the decisions
(or will this create a vapor barrier in the wrong order and cause problems)?
734-678-0280 - Craig
Posted Oct 11, 2011 12:36 PM ET
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