Open-cell foam has a lower R-value per inch than closed-cell foam and is typically about 30% cheaper. Due to the lower R-value, open cell must be applied in a thicker layer. Therefore, it lends itself to areas that offer more space, such as attics, ceilings and floor beams.

Closed-cell foam is more expensive, but this investment pays off in a higher R-value per inch. Additionally, due to its “sticky” qualities and rigidity, once cured it can also provide greater structural integrity to walls and ceilings.

Up to 40% of a building's energy is lost due to air infiltration. Air gaps and leaks allow heating and air conditioning to go to waste and unnecessarily increase energy bills. The U.S. Department of Energy estimates that 56% of a home's energy is used for heating and cooling.

When applied, spray polyurethane foam expands to insulate and fill cracks and gaps to provide a consistent air seal. According to the U.S. Department of Energy, by using spray foam to minimize air leaks in walls and roofs, a typical homeowner could save up to 15% on heating and cooling costs.