Ventilation
A common misconception is that you want to "air out" your crawl space, but in reality you want outside air completely sealed out! That air will bring in moisture and not to mention CRITTERS.
Standing Water
Standing water in your crawl space is just asking for trouble. It will lead to mold, which could lead to major foundation issues.
Mold
We are one step away from foundation issues. Soon their floor joists will be too weak to hold up the weight of their furniture and people moving around the house. They would have needed a stabilizer to lift the floors back up if we hadn't gotten there just in time.
Drainage Matting
The raised dimples of the matting helps trapped water flow and redirect it to designated pump/drain.
CleanSpace Liner
This liner works as a moisture and vapor barrier. It also seals out cold winter drafts!