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Posted by RicodJour on April 6, 2008, 11:56 am
>
> > I am working on a Geodesic Dome Re-Roof.
> > I did the construction several years ago to
> > 2 attached buildings. (both vented with cora ridge and doing fine)
> > The Geodesic Dome is nasty.....There is no ventilation in the traingle
> > shapes....It was insulated with standard batt insulation and sheetrocked
> > interior......No place for the water vapor to vent.....
> > The owner knows it, I really cannot fix the problem other than re-roof
> > it.....
> > What a job......
> > All the cells are enclosed.......
> > What can you do?
> > any ideas welcome....
> > jloomis
>
> Foam roofing is a way to go. If there is no moisture damage he
> probably doesnt need it.
Spray applied polyurethane foam roofing is good stuff if the building
is designed to deal with the moisture from inside the building. It
totally changes the look of the building, and maybe that's wanted or
not. Whether the additional expense and change in appearance is
desired is up to the owner.
http://www.schmidtroofingservices.com/FAQ.htm
The big caveat is that moisture from inside the building will condense
inside the batt insulation or, more likely, right on the plywood
sheathing. If extreme care was taken to seal all gaps and
penetrations, and a vapor barrier paint was applied to prevent
moisture from migrating into the insulation space, there'd be a fair
chance that it would have good longevity.
R
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