Closed cell spray foam / Discussions

...cell spray foam on the concrete walls.  The stud walls are 3-5" " from the close cell spray foam.  I can either (try to) pack the void between the wall and the uneven surface of the closed cell spray foam, leaving the stud bays empty, or leave the air gap beween the stud walls and install the rockwool betweent the stud...

...cell in the joists and leaving it vented or sealing the crawl with closed cell on the perimeter walls and joist ends. if I spray closed cell i will only have a 12 mil poly vapor barrier in the sand floor. i will then have to heat that crawl and put an fan it exhaust the air to outside. what should I do? and can the clo...