Retrofitting Existing Buildings with Green Roofs

We don#t realize how much of our cities# total land area is taken up by roofs. Many of these roofs are flat and ideal candidates for a green roof retrofit. But before retrofitting an existing building with a vegetated roof, many factors must be taken into consideration. This article is perfect for architects, engineers, facility and property managers, and building owners who may have a roof that needs replacement in the near future. It will provide readers with an understanding of which factors to consider, types of roofsavailable, structural considerations, and benefits of doing a green roof retrofit.