U.S. demand for commercial door and window products is forecast to reach $10.3 billion in 2020 and grow 4.5 percent per year, according to a new study from The Freedonia Group, a Cleveland-based industry research firm.

These gains are spurred by continuing growth in nonresidential building construction, which reached a peak in 2008 and declined sharply the following two years, resulting in lower demand for doors and windows. Demand began to recover in 2011 and the pace improved in 2015 amid activity in office, retail and lodging construction.

Metal door and window products, which are valued for their strength, durability and security, account for the vast majority of commercial demand. Many products that see intensive use in commercial applications, including overhead doors, curtainwall, automated doors and storefronts, are almost exclusively made of metal. Efforts to improve the aesthetics and energy efficiency of metal products will support demand.

Wood products will continue to be important in some applications, such as interior doors in office, lodging and institutional buildings. Plastic accounted for the smallest share of demand in 2015 but will see the most rapid growth of major materials through 2020. Plastic will see increasing use in various light commercial applications, including offices, schools and hospitals, where damage is unlikely and there is interest in energy efficiency and the improved aesthetics offered by some plastic products.

Doors comprise the largest share of the overall commercial door and window market, supported by both high unit demand in interior applications and by ongoing demand for high-value products such as overhead, security and automatic doors. Many nonresidential facilities, such as offices, healthcare facilities and government buildings, are intensive users of both exterior and interior doors.

Information about obtaining the full report can be found at www.freedoniagroup.com.