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Posted by Jimbo on June 13, 2005, 10:16 am
Correction:
Our local code doesn't require venting from wall cavity to the attic (don't
know what I was thinking) I was thinking about the plastic vents we
installed in the attic to allow air flow up from the soffet and facia.
Jimbo
>I have a 960 square foot un-insulated hobby shop that was originally a flat
>roofed foundry constructed of cinder block. Years ago I put a regular
>peaked roof on the building rather than repair the flat roof. We have just
>started framing in and insulating the inside of the shop with moisture
>resistant Fibre Batt insulation and plastic vapor barrier and the plastic
>vapor barrier is glued to every beam with beads of caulking compound to
>insure a good seal.
>
> It's been very humid here for the last week and my problem is we now have
> moisture dripping down the inside of the vapor barrier. I'm getting all
> kinds of different and conflicting advise including the option of
> applying tar paper on the block wall before framing and insulating the
> wall. I also know that the residential building code in my area requires
> venting that runs from the wall cavity up to the attic but in this case
> trying to cut and run vents up through the flat roof of this old building
> into the roof cavity would be a massive undertaking. The way I look at it
> if the building still had a flat roof and venting was not possible there
> must be an accepable and code legal way of eliminating all the moisture
> build up.
>
> Any help will be appreciated
>
> Thanks in advance
>
> Jimbo
>
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