A growing trend throughout the Chicago area, occupant-accessible green roofs can provide a respite from the hustle of the city.
Even without occupant access, green roofs prove their usefulness by reducing the heat island effect (a phenomenon in which cities and other urban areas are several degrees hotter than surrounding rural areas because of pavement and concrete absorbing heat from the sun and radiating it back into the air over time). The City of Chicago has over 500 vegetative roofs throughout the city, including on City Hall. Green roofs add insulation to the top of a building, helping to save energy by keeping buildings cooler during summer and warmer during winter. Green roofs also provide excellent stormwater management during periods of heavy precipitation. These are just a few of the benefits of green roofs.
Learn more about cool roofs (including green roofs) in a video from the Department of Energy here.