So my floors are freezing. I can feel the cold air come up through them. Under them is the crawl space. What can I do. When I saw crawl space, I am literally talking about a space a little kid would have trouble crawling around in. I have tried to seal up the outer perimeter. But obviously I need to do something more with that also. I am pointing a IR thermometer at my floor right now and it is 38 degrees... what can I do? I know carpet would help a little but..