Have you ever noticed round vents coming through your crawl space, into your house through rectangle holes? If you have witnessed this situation it’s not an ideal situation. Fiberglass batts are not sufficient in stopping both air and moisture infiltration from occurring. Even if you think your home is properly insulated, batts do not prevent contaminated air from travelling into your home.
Worse, if your crawlspace has no insulation at all, 20 % of the money you spend to heat your house is leaking straight through the floor. Spray Foam Insulation installed between your floor joists in your crawl space is the only material that will form an efficient thermal barrier from obstruction, such as wiring and plumbing, ductwork, and narrow or wide joist spacing.