4.9 
Poor Insulation
Fiberglass is just not designed to withstand the wet and damp conditions of a crawlspace - instead providing an ideal mold growing environment.
Better solutions
After absorbing the ambient moisture it now has not only lost all insulation properties but likely has fallen out and onto the crawl space floor.
Healther Homes
Moisture in a crawlspace threatens the very structure of your home. By fully encapsulating the area, with all the seams, joints and vents completely sealed, there is now no way for water vapor to enter the space and cause problems to the health of the home. Including doing a much better job of insulation.
