There doesn’t seem to be any information available about how many homes in the U.S. have green roofs. A survey by the organization Green Roofs for Healthy Cities reports that there was a total of 2,647,355 square feet of green roofs in the United States in 2008. However, the survey doesn’t say how many of the green roofs were on homes. Since most green roofs seem to be installed in cities, I would think there are more commercial and apartment buildings with green roofs than individual homes.
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