I would appreciate any advice on which type of foam to
use on a newly erected 30x40 14'eave 1-12" pitch metal building.
Slab is set for hydronic heat, so I had figured on some type of spray
foam, open, or closed . I have read some posts, but am in a quandary
in regards to leaks in the roof, will they show in closed cell? I spoke to
a supplier of kit based foam and the sales person said that you would
never use open cell foam on a metal roof because it will absorb moisture
and hold it causing rust. Right now I don't know what the commercial people
are using. I realize cost is a factor, and don't have ANY experience with foam.
Thanks
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