Did I forget to mention that the laundry room is just outside the door and the door remains partially open. There is also a furnace/storage room that is not well sealed on the other side of the laundry room. I need to put in a cat door and keep the rec room door closed. It is only bad when the outside humidity is bad. I sealed all of the concrete walls and floor in the rec room and added hard insulation to the concrete walls, so I think that I am good there. Any suggestions would be welcome.