There's a common misconception that “green roof” and “rooftop garden” are one and the same. Although there are some similarities, there are significant differences, explains Richard Heller, CEO/CFO of Greener by Design in Pelham, N.Y.
Green roofs are intended to reduce energy costs by helping regulate temperatures within the building, keeping them cooler in the summer and warmer in the winter. In addition, they're designed to absorb as much as 80 percent of the rainfall that lands on the roof, significantly reducing the amount of water that flows into the city’s sewer systems and treatment plants.
Many times green roofs are as simple as a drainage membrane that's laid upon the existing roof and then covered with “trays” of a groundcover like sedum, which requires very little maintenance once it's established. They may or may not be accessible.
Rooftop gardens, on the other hand, are designed to create useable and functional space for the building owner and its occupants and may or may not take on the qualities of a green roof.
Show: Go To Heller For Green Roofs
Guest: Richard Heller, Greener By Design, Pelham N.Y.
Date: April 17, 2013
To listen to the full show, CLICK HERE.