Airbricks Damp Under Ground It’s the air inside the material that's really doing the insulating. If the material gets damp, water begins to exchange air . Even if a damp house and a dry home have the identical inside temperature, the damp home will feel less comfy, and colder. http://laneiptwy.blogs-service.com/26182894/simple-sub-floor-installation-installation-solutions-some-new-opportunities