Part of my basement as for insulation foam boards glued to the concrete walls dow to about 6 inches from the floor. I've noticed recently some seepage at the base of one of the foam boards. Thinking it could be a leak, I removed the foam board to investigate. The entire wall was wet underneat. It seems like condensation is forming behind the foam boards. The concrete is chipping on the surface as a result of this situation.
I'm currently letting it dry but I'd like to know how to prevent this when I'll re-insulate that part of the basement.
Stefan Mazur