Energy Efficiency

Energy efficiency is a cost-effective way to reduce energy consumption through the right building products technologies and building energy systems.

Heating and cooling residences, commercial structures, and other types of buildings takes a lot of energy. According to the U.S. EPA, buildings account for an estimated 40% of total energy use, and 30% of greenhouse emissions. Much of that use and resulting emissions is due to the need for internal temperature control. Without appropriate insulation design, buildings could not achieve advanced energy efficiency and climate change reduction goals.

XPS foam insulation is a superior choice for energy efficiency. With a long-term R-value from 3 (for 1/2”-thick sheathing boards) to 5 (for 1”-thick boards), and higher for thicker foam insulation, XPS sheathing, installed as continuous insulation, enhances the R-value of the entire wall. XPS insulating sheathing boards cover wood or metal studs and other wall components, such as framing, ducts, wiring, and plumbing—which can account for over 25% of the exterior walls in an average home. When properly installed, XPS continuous insulation forms a complete air barrier that reduces convection currents and air infiltration (draftiness), the leading cause of energy loss.

XPSA Featured Articles

Considerations for Specifying Rigid, Cellular Polystyrene Insulations in Various Applications (PDF)

By Rob Brooks, Tiffany Coppock, Matt Dillon, Mike Fischer; Meng Guo, Valentina Woodcraft - IIBEC Interface

Absorption d’humidité dans l’isolant de polystyrène (PDF)

John Woestman, Absorption d’humidité dans les isolants de polystyrene, FORMES, Vol. 18, N1.

Extruded Polystyrene in Protected Membrane Roof Assemblies (PDF)

By John Woestman, Director of Codes and Standards, XPSA - The Construction Specifier

Moisture Absorption in Polystyrene Insulation: Effects on In-Service Design R-Values (PDF)

By John Woestman, Director of Codes and Standards, XPSA - IIBEC Interface