Green roofs are a natural cure to problems created by blacktop jungles.
Basic components of a green roof include: 1) Biodegradable wind blanket; 2) Soil; 3) Drainage layer; 4) Insulation (optional); 5) Roof barrier
Illustration by Gayle Ford
Perennial Sedum varieties make up most of the maintenance-free vegetative cover on the roof of the Fencing Academy of Philadelphia. Fescue grass, sedge, allium, burnet, and dianthus provide accents. Landscape Design: David Ben Yaacov, RA. Roofscape: Roofscapes.
Chicago City Hall’s living roof is part of the city’s Urban Heat Island Initiative project. The landscape design is based on a formal garden and includes a drip irrigation system fed partially by water collected from the adjacent penthouse roof. Roofscapes contractor: Church Landscape. Landscape architect: Conservation Design Forum. Architect: McDonough + Partners.