Here's a crawlspace project we are on. We replaced 31 feet of beam and installed all new support posts under this home, and of course we installed the patented CleanSpace system and SaniDry Sedona dehumidifier. Next step will be to spray insulate the walls. On a side note; don't let anyone tell you spray insulating the floor over a crawlspace is a solution to anything. It's not. We never do that, but the other guys do... They build 'em, we fix 'em!