I guess it depends on the type/brand of the foam and what temperature the metal was at when it was sprayed. My barn has an attached section (24x24) so from a birds eye view looks like a T. I had them spray the 24x24 first to see how the spray foam would react with the metal because I was nervous with something so permanent. The issue with that part was the foam leaked out of the ribs above the stone veneer where it meets the metal (3' around the base of the shop except for the back. So when they foamed the large barn I had them go around with the handheld Hilti spray foam gun and seal all areas where you can see daylight above the stone, windows, and the very bottom (back of shop). So that issue was solved with no leaking but now I have the distortion. They are coming out today to assess the situation. Problem is what are my options? The positive is it was 36 degrees outside and it was 54 in the barn this morning with no heat installed.
Question for kjmustang: so your saying you have absolutely no dimples around the screw heads or anything in that matter after the foam installation? I was thinking I could back off on the screws and see if it releases? I would do that in front of the foam company owner.