Alexandria VA crawl space spray foam insulation

This Alexandria VA crawl space had been partially conditioned with material installed to cover the dirt flooring and walls, but the insulation for the space was not done correctly.  The walls and rim joists in the crawl space were left uninsulated while traditional bat insulation was used to "TRY" and insulate the floors above the crawl space.  The bat insulation allowed for cold and or hot, unconditioned air from the crawl space to impact the floors above.  The outside temperatures and moisture were able to freely impact the crawl space due to open air vents and no insulation for the walls.  We removed the bat insulation and some of the wall coverings and proceeded to use spray foam to seal the air vents, rim joists and to insulate the walls.  No more free moving outside air causing humidity and we conditions in the crawl space.