Please help. We just had our basement finished and I discovered mold growing on sheetrock that is laminated onto cinderblock walls. This is a storage area, the rest of the room is framed out about 2" away from the walls. We have not had water in the basement but we do have an interior french drain that leaves a gap between the wall and floor. Does anyone know if the mold could have grown up from this to the drywall also is there a risk of mold behind the rest of the other walls because of this. We had several contractors come in before we began the project and none were concerned about the gap now I'm in a panic! We have a dehumidifier for the basement will it help to keep the area behind the sheetrock dry?