Share 'Closed Cell foam making floors cup?'

Question for this board. Although it is not best practices, it is related to retrofits? I walked into the house today and the entire ~1300+ sq.ft. of the hardwoods were rippling/cupping at the joints (there was also carpet and tile, but no visible problems). I took a moisture reading of the poly coated walnut and it was 8.5% from inside the house. I took a reading of the yellow pine joists under…