Kurt Tribbet, engineering administrator for the City of Battle Creek’s Public Works Department, unrolls a section of the police department’s green roof. (Photo: Trace Christenson/The Enquirer)

Rugh said the green roof has a life expectancy of up to 60 to 70 years, well above that of a conventional roof. “The most direct financial savings is the roof lasts so much longer,” he said. “You get one free roof for every green roof.”

Source: Portion of BCPD’s green roof relocated to New York City building