If warm air+ cold air = condensation, could it also = moisture? I do not have insulation in between my floor joist. If i used foil back insulation do you think that will reduce my moisture/condensation problem? I have no leaks that I can see and my ground is slopping away from my house and my gutters look good. I have no water standing at all and i even added some more foundation vents. I have ceiling heat and it seems like that it goes right through my floor and into my crawl space. I have 6 mill plastic on the ground in my crawl space. It seems to be damp under the plastic but not on top of it. All help is greatly appreciated.