Tums, could you go into more detail about the "flash"? I'm not grasping it 100%.
Are you saying that the wall studs were "flashed" with a thin coat of closed cell foam before the drywall was installed"
Or was the whole wall stud and inside of the outside sheathing given a thin coat of the stuff?
The ceiling drywall and studs were sprayed with a very thin coat of Closed Cell Foam from the top before the bats were installed?