Homestead mailing list

["Warren F. Smith" <WarrenSmith AT PalmettoBuilders.net>]

You folks are somewhat over complicating the insulation/condensation issue.
Condensation happens when warmer, moister interior air contacts the colder
metal panels. The solution used for years and years in pre-engineered metal
buildings is fiberglas insulation with surprise, a vinyl vapor barrier. Once
the envelope is sealed with that system treated lumber is not required, and
additional, more conventional insulation can be added.

http://www.naima.org/pages/resources/faq/faq_metal.html

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