SPF or spray polyurethane foam describes a category of high-performance spray foam insulation and air barrier material that delivers multiple benefits in one application. These advantages include high insulation values, near-zero air permeability, increased building strength, severe weather and flood resistance, increased occupant comfort, improved indoor air quality, reduced operating costs and lower environmental impacts.
Because spray polyurethane foam is fully adhering and seals hard-to-reach penetrations, it provides unequaled air sealing properties for the entire building envelope. Reduced uncontrolled air leakage results in lower utility bills and reduced greenhouse gas emissions.
In fact, ENERGY STAR® reports that air leakage accounts for 25 – 40% of the energy used for heating and cooling a typical home. For a typical home SPF may add about $20-$40 per month in extra mortgage costs. However, they can save the homeowner an average of $60-80 a month in energy costs, actually paying you back every month despite the higher initial investment.