6/3/2010

A recent survey by Green Roofs for Healthy Cities found the green roofing industry in North America grew by 16.1% in 2009, while other areas of the construction market and the economy struggled mightily. Chicago led the nation in the area of green roofs for the sixth consecutive year -- more than 562,000 square feet of sod roofs installed, well ahead of Washington, D.C., and Minneapolis.

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