we are building a large 3 story house. it is not yet completed, but is in the end stages. water spots can be seen every time it rains outside in the same area of the basement. when we discussed it with the builder he says it is condensation from the bricked in porch on second level...he states it is sweating...when you look at the outside of the screened in porch there is a large doorway which is still open at the time so there is circulation of the air. any suggestions or questions if might ask of the builder?