I am doing some remodeling in the bathroom of a bi-level. I removed the wood paneling and found the stud wall directly against the concrete block foundation with batt insulation only in the cavities. This is a brick house and in between the exterior red brick and stud walls are Styrofoam panels. I have only had water leakage once, when the water table was extremely high.
What would the best way to insulate this stud wall that is against the block foundation wall?