I own a home where the previous owner added a room onto the back of the house. The original exterior wall is now an interior wall. The weep holes are open in that section of wall and I am wondering if they should have been closed off since they are open to the interior of our house. Additionally I notice that the slab that was poured for the room was poured up against the old slab so that there is a thin seam between the two. Should a liquid sealer have been poured into the seam since the slabs are not one? I notice that we get a higher humidity level in that part of the house and I am wondering if the weep holes and seam are the culprits.