WALTHAM, Mass. - On the eve of its 25th anniversary in March, the Single Ply Roofing Industry (SPRI) association released statistics showing dramatic increases in acceptance, growth and enhanced field performance of single-ply and modified bitumen roof systems.



WALTHAM, Mass. - On the eve of its 25th anniversary in March, the Single Ply Roofing Industry (SPRI) association released statistics showing dramatic increases in acceptance, growth and enhanced field performance of single-ply and modified bitumen roof systems.

“In the last 25 years, SPRI has helped support the commercial roofing industry through a wide variety of standards-writing, technical and research efforts,” said the organization’s president, Paul Larson. “It is gratifying to see statistics that document the dramatic growth and market acceptance of these low-slope roofing systems and components.”

Independent market research from Infometrics Inc., Duluth, Minn., indicates that single-ply roofing systems accounted for only 10 percent of the domestic low-slope roofing market in 1979. This percentage increased to 25 percent in 1983, one year after SPRI’s founding. In 2006, SPRI member companies shipped out more than 3 billion square feet of sheet membrane roofing, representing 67 percent of the average roofing contractor’s annual volume, according to Cleveland-based research firm Penn & Associates.

For more information about SPRI, visit www. spri.org.