25 Jun '13, 3am

How to insulate a curved 0.25" thick zero-perm wall (aka a "boat")? #green

I've been contemplating the concept of tiny houses and, as a subset, boats. One major issue in both is interior condensation, but boats make it even harder since the exterior is zero-perms & about R1. Many folks avoid this issue by running for the Caribbean in the winter, but I'd like something more elegant. How can I insulate a curved zero-perm surface? The most likely concept I've thought of so far is two (1/2"?) layers of flexible closed-cell foam continuously bonded to the surface beneath (yes, I realize this is incredibly time-intensive, but it is a small amt of surface). Does anyone have a better idea or an additional idea? I've heard too many stories of folks running 3kw to heat 200SF of space....and barely controlling condensation...at an exterior temperature of 40degF.

Full article: http://www.greenbuildingadvisor.com/community/forum/energ...

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