Closed cell spray foam insulation out-performs any insulation on the market in crawl spaces and basements. It is uniquely suited for this application. Closed cell spray foam insulation acts as a vapor / moisture barrier, keeping your crawl space dryer and protecting your home. It can be applied in a variety of ways in a crawl space. Each application is catered to each home. The most common application is on the rim band, foundation walls, and foundation floor. This creates a complete insulation and vapor barrier envelop for the crawl space. One of the biggest benefits of this application, aside from its superior ability to combat moisture, is that this will keep any plumbing / HVAC within the insulated envelope of your home. This alleviates the worry of freezing pipes and condensation occurring on your ductwork. This will also increase the energy efficiency of your home because the ducts won’t be losing conditioned air on its way to your home. Another common application is applying the foam directly on the underside of the subfloor. This is typical when there is no HVAC ducts in the crawl space. This application of closed cell spray foam insulation prevents the unnecessary heating and cooling of the crawl space, reducing the total square footage your HVAC system has to heat / cool. It also protects your subfloor from the moisture of the crawl space. Lastly, closed cell spray foam insulation has been shown to be 65 times more resistant to radon gas than a 6 mil polyethylene membrane. This makes it exceptionally suited for use in crawl spaces and radon abatement.