The American Society of Landscape Architects (ASLA) saves hundreds of dollars each month in energy costs and avoids thousands of gallons of storm water runoff by installing a ‘green roof’.
Green roofs are roofs made of different natural materials including vegetation. They avoid storm water joining sewage and storm water systems, are great insulators and are usually made with less environmental negative effects than normal roofs.
Runoff occurs only when rainfall exceeds a certain level and contains fewer pollutants from ordinary runoff. The ASLA found that air temperature dropped by as much as 32 degrees in the summer compared to a nearby tarred roof.
Extra insulation decreases the building’s energy usage by 10 percent in the winter, and by 2 percent to 3 percent in the summer.
The initial cost of green roofs range between $10 and $20 per square foot, compared to $5 to $10 per square foot for a conventional roof. Apart from the energy savings, green roofs significantly extend the lifespan of the roof membrane because of sunlight and temperature variance
To find out more and discover the nearest green roof manufacturers to you, visit www.greenroofs.com/