[Greenbuilding] Green real estate market -- spray foam, and geothermal

[Alan Abrams]

----- Original Message ----- 
From: "Keith Winston" <keith at earthsunenergy.com>

> We just had Icynene blown on a job recently, and it slightly peeled away
> from some of the framing members in some places. Have other people seen
> this? I have heard of the problem before, I suspect it might have been a
> little too cold for installation... I don't think it's going to be a
> problem, but I'd probably try harder to have foam installed in warmer
> weather next time.
>
> Keith

When we had our home sprayed with one of the soy based foams two summers ago

there was absolutely no separation on the wood studs but minimal on the 
precast basement's concrete studs, which were a bit cooler.

Ron




I call it "bread panning."  I just assume that it's going to occur, and that
we've got to point things up with a can of spray foam.  An installer told me
that spraying on concrete or masonry requires two passes with the spray gun,
a first to prime the cold wall, and a second which then can fully expand. 

Alan Abrams