Roof Retained 27,500 Gallons of Stormwater in First Year WASHINGTON, Sept. 19 /PRNewswire-USNewswire/ -- The American Society of Landscape Architects' (ASLA) green roof retained thousands of gallons of stormwater, reduced building energy costs by hundreds of dollars a month, and significantly lowered outdoor air temperature according to a report today from the association. The report examined various components of ASLA's green roof demonstration project, ranging from water and temperature monitoring to individual plant performance. "Because landscape architects are leading in the design of green roofs across the country, it was important for us to build a demonstration project and measure the impact green roofs have on their surrounding communities," said Nancy Somerville, Executive Vice President and CEO of ASLA. "The findings show that our green roof delivered significant economic and environmental benefits."
