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    Dean780's Avatar
    Dean780 Posts: 1, Reputation: 1
    New Member
    		  
    #1

    Oct 30, 2010, 01:05 PM
    Cathedral ceiling with no attic on a 12/12 roof. How to insulate?
    I have a 12/12 pitch roof, no attic, tin roof. I need to insulate it. It is new construction. Do I leave an airspace between the insulation and the plywood shething so that I can get ventilation through the soffits up through the vented ridge cap or so I stuff it full?
    ballengerb1's Avatar
    ballengerb1 Posts: 27,378, Reputation: 2280
    Home Repair & Remodeling Expert
    		  
    #2

    Oct 31, 2010, 12:42 PM

    His would have been a much easier task had you asked it during construction. Where do you live? What is your ceiling on the inside like and are there exposed beams?
    creahands's Avatar
    creahands Posts: 2,854, Reputation: 195
    Ultra Member
    		  
    #3

    Oct 31, 2010, 02:26 PM

    There is a venting channel made for application between rafters. It is available at most lumber yards and big box stores. It is a light weight plastic that is stapled to sheathing. Then insulation is installed.

    Chuck
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