My foundation walls are ICF. I have used the Platon dimple fabric to cover the walls. Foundation is covered to protect against frost, but am now at a point where I need to backfill further and therefore cover my service penetrations. All penetrations have all been made using sch 40 PVC and are typically flush with the outside edge of the foam wall, though a few extend a few inches out. Do I just cut an ample sized hole in the dimple fabric to allow my service through and then seal it up with spray foam as was suggested by my ICF supplier or should I be doing something a bit more elaborate?