In a message dated 3/24/99 12:36:43 PM Eastern Standard Time, [log in to unmask]
writes:

<<  my EIFS experience is from investigating a botched job, for
 which we were never able to identify any decent details >>

As far back as I can recall no information regarding vapor transmission from
interior spaces has been dealt with in EIFS literature. The insulating barrier
is not permeable on the exterior, but the stucco materials are. Condensation
will occur on the back face of the crap and it doesn't matter how well you
apply sealant to the exterior face of the stuff, moisture is going to enter
the system. No performance criteria has been developed for interior vapor
barriers when used with the stuff as far as I know, but I'd love to be proven
wrong. The ASHRAE handbook makes predictions about how much vapor can be
anticipated through an installed system, but otherwise provides no
information. I also just love the idea of applying a material, to the exterior
of a building, which can be rendered useless following a collision with a
tricycle.

Twybil