Watch on YouTube: http://www.youtube.com/watch?v=U7XGdBtBnRo
Crawl space moisture problems and black mold. The crawl space must be heated, conditioned, and de-humidified. The crawl space should not be vented to the exterior. You must inspect your crawl space.
See also
Crawl Space by Cleveland Home Inspector Marko Vovk
Watch on YouTube: http://www.youtube.com/watch?v=NpKynwWmA74
Mold The Truth We have all been scammed
Watch on YouTube: http://www.youtube.com/watch?v=AlQytXkRnOM
The truth about ICE DAMS
Watch on YouTube: http://www.youtube.com/watch?v=yNHZNzVhWmg
Marko Vovk Website
http://houseinvestigations.com/