Building Magazine


Green roof industry grows by 24 per cent in 2012

Green Roofs for Healthy Cities (GRHC), a membership-based industry association whose mission is to develop the green roof and wall industry in North America, is pleased to announce a 24 per cent growth rate in installed green roofs in 2012 as part of the results of the Annual Green Roof Industry Survey.

“On the heels of a huge 115 per cent growth rate in 2011, the green roof industry still grew by 24 per cent in 2012,” said GRHC founder and president Steven W. Peck. “Green roofs are being embraced around North America, by policy makers, designers, building owners and developers because they deliver multiple proven public and private benefits.”

In 2012, the Washington DC Metropolitan Region installed the greenest roofs in North America with 1,326,872 square feet, and adopted a number of public policies that support green roof investment. “The District is proud to lead the nation in installation of green roofs,” said Mayor Vincent C. Gray. “Green infrastructure is an investment that is showing real benefits in the District and green roofs play a major part in turning the vision of a Sustainable DC into reality. Green roofs support green jobs, reduce and reuse stormwater, and create beautiful amenities that improve the quality of life and health of our residents.”

“There are many factors that are leading to this remarkable growth,” said Jeffrey L. Bruce, GRP, Chair, GRHC, “but undoubtedly the almost 600 accredited Green Roof Professionals (GRPs) in the market are using their expertise to drive market growth.”

The association’s members recorded 982 projects (totalling 5,588,098 square feet installed) in 2012, up from 870 (totalling 4,577,935 square feet installed) in 2011. As in past years, there were a similar amount of public and private green roof projects reported. There were 2,005,990 square feet of private projects and 1,696,011 square feet of public projects, with the remainder unspecified. To put this in perspective, the market penetration goal discussed at CitiesAlive 2012 in Chicago is one billion square feet of green roof completed over the next decade.

GRHC is hosting two conferences in 2013:

  • Grey to Green: A Conference on the Economics of Green Infrastructure, in Toronto, May 21 to 22 –,     
  • CitiesAlive: 11th Annual Green Roof and Wall Conference in San Francisco, CA, October 23 – 26 –

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