Spray Foam

Spray Foam Insulation Sample

How it Works

Spray foam insulation is a two part insulation product that achieves both insulating and air sealing in one swipe. Once the product is sprayed onto the surface, the chemical reaction takes place and the product starts to expand. This is a much different process then the traditional practice of place fiberglass or cellulose. Once the product starts to expand, the foam will not only fill the areas it was applied to, but air seal and insulate at the same time. This process not only increases the energy efficiency of the home and reduce your energy use, it also makes the area stronger.

Open or Closed Cell, Which is Better?

When comparing the two different types of spray foam it comes down to a few basic differences: 

Closed Cell: The foam is a denser product around 2.0 pounds per cubic foot; this means that the cells are tightly packed together not only creating a much higher R-Value of 6.2 - 7.4 per inch but also creates a tight air seal. This also means that closed cell foam is more resistant to water degradation / penetration like moisture build up.

Primary Uses: New construction / remodel walls, cathedral ceilings, air sealing in attic, rim joist and any area needed for high R-Value

Open Cell: Open cell has a much lower density at around 0.5 pounds per cubic foot. The cells are "broken" and not completely closed, which does not allow it to create an air tight seal and only has an R-Value of 3.2 - 4.3 per inch. This type of foam has a much higher expansion rate over closed cell spray foam because of its "broken" cells. With the lower R-Value and "Broken" cells, open cell foam can have insulation failures in extreme heat as well as soak in water vapor.

Primary Uses: Retrofit walls