Condensation at the bottom of a foundation wall
I notice today that there is a band of condensation at the bottom of the foundation walls around the entire interior perimeter of the basement. I have 2 different slab heights and one side of the house has sandy soil and the other side has clay. There is no water in the footing drains, there is a capillary break between the footings and the foundation walls, and the exterior is waterproofed from the footings to grade. It has been hot and humid here in NJ and the house is not conditioned yet. We poured the slab about a month ago, 4″ of EPS below, 2″ on the sides, 10 mil vapor barrier and 4″ GFRC. The wall is coldest pat the bottom, so if condensation is going to occur anywhere, it is there, but I am curious as to where that moisture is coming from. The slab, the interior air, the ground beneath the sub-slab EPS? I want to start installing the EPS foam on the walls, but I would prefer the walls to be dry before attempting to glue anything to them. Thoughts on where that moisture is coming from?
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