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Roof on cathedral ceiling

user-7631346 | Posted in General Questions on

I have a 3 season camp with tongue and groove cathedral ceiling and now I have to replace shingles with metal roof. Roof pitch is  3  by 12  and  we get a lot of snow . The  rafters  are 2 by 6 built in the 60s . Moisture got in the batting and caused water damage on rafters and insulation and mold problems. I will probably be pulling old sheathing. Could I use heavy clear plastic as a vapor barrier applied from above on tongue and groove ceiling and then my insulation. I also need to know if the roof needs to be vented.

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  1. GBA Editor
    Brian Pontolilo | | #1

    Hi user-7631346 (would be great to get your real name).

    A lot depends on where your cabin is located and how much you heat and cool it when you are using it, and how you leave it when you are not. Since that all is circumstantial, all I can offer is information on how to do this right as if it were a year-round home. In that way, this article will get you pointed in the right direction: How to Build an Insulated Cathedral Ceiling

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