Entrance way to the crawl space
The old way of thing was to vent the crawlspace, we now know that letting hot moist air is a bad thing
Inside the crawl space
Inside the crawl space you can see the pipe line, some debris, and wet dirt (mud).
Crawl space after being cleaned
this type of vapor barrier is insufficient and will lead to many problems for the homeowner.
Completed Crawl space
Mold can still grow if the vapor barrier is not sealed and run up the walls.