Benefits of Closed-Cell Foam Insulation

un-finished house from outside

High-performance STYROFOAM™ Brand Extruded Polystyrene (XPS) Foam Insulation and STYROFOAM™ Brand Spray Polyurethane Foam (SPF) Insulation help to increase building energy efficiency above and beyond conventional wall systems, such as uninsulated sheathing and fiberglass cavity batts.

R-Value: In a typical wood-framed home, continuous foam insulation can improve a wall system's R-value by as much as 32%.1 In steel-framed construction, the improvement can be even greater.

Heat Flow: In a series of residential wall panel tests conducted by the National Association of Home Builders (NAHB) Research Center in 2005 and 2006, foam insulation reduced heat flow by an average of 18% to 25% versus fiberglass batts.2

Carbon Footprint: A life-cycle analysis conducted by McKinsey and Company found that every unit of CO2 used to make rigid foam insulation saves more than 233 units of carbon dioxide.3 If every house in the U.S. was insulated with high-performance rigid foam, the CO2 savings would be equivalent to saving 2.5 billion gallons of gasoline each year.4

Have we stimulated some questions? Dow has answers.

1 Wall assembly R-values calculated using parallel path method from 2009 ASHRAE Handbook of Fundamental, page 27.3.