Green Roof Usage Statistics
Green roofs reduce the temperature of the building and the surrounding air in multiple ways.
Green roof usage statistics. The plants in a green roof absorb water through their roots and then use surrounding heat from the air to evaporate the water while some roofs can reach temperatures of up to 90 f in the summertime these two features can allow. 2 introduction this project was designed to address the needs of the chesapeake bay foundation. Green roof is a special green space plantings landscape installed above a waterproofed substrate at any building level that is separated from the ground. A green roof can also provide a refuge for insects and birds that have lost their natural habitat due to urban development and the loss of green space.
The temperature on the green roof on the hottest summer days can be as much as 59 degrees cooler than conventional roofs on neighboring buildings. Glass associate professor department of civil engineering howard university and etec l l c. Whether strictly utilitarian or highly special ized and ornamental green roofs have a variety of benefits over a traditional roof. 6509 41st avenue university park md 20782 july 26 2007.
A green roof provides a rainwater buffer purifies the air reduces the ambient temperature regulates the indoor temperature saves energy and encourages biodiversity in the city. Green roof green roof performance data. They provide shade to the top of a building evapotranspiration. Green roof temperatures can be 30 40 f lower than those of conventional roofs and can reduce city wide ambient temperatures by up to 5 f.
Green roof water quality and quantity monitoring dr. Roof produced a 10 percent decrease in building energy use over the winter months. Benefits of a green roof. A green roof has many benefits at economic ecological and societal levels.
1 2 in addition green roofs can reduce building energy use by 0 7 compared to conventional roofs reducing peak electricity demand and leading to an annual savings of 0 23 per square foot of the roof. Green roofs help to insulate a building for sound. Some green roofs incorporate urban agriculture and include herbs and vegetables that can be harvested for use by the building s occupants or the community. The global green roofs market research report by technavio predicts the market to post a cagr of more than 19 during the period 2018 2022.
The environmental benefits include con. The soil helps to block lower frequencies and the plants block higher frequencies they can reduce heating and air conditioning costs simulations project they can lead to a roughly 10 percent reduction in natural gas consumption and a 2 percent drop in electricity use for a typical building.