Traditional Green Roofs Improve Air Quality

Using green roofs in cities or other built environments with limited vegetation can moderate the heat island effect particularly during the day.

Traditional green roofs improve air quality. Extensive planting within cities is now widely recognised as a means of improving air quality. Green roofs also have a fairly stable surface temperature remaining at air temperature or cooler while traditional rooftops can soar up to 90º f 32º c above air temperature source. Green roofs provide shade remove heat from the air and reduce temperatures of the roof surface and surrounding air. Green roofs can help air quality in london.

The temperature in cities is often higher than surrounding rural areas a phenomenon known as the urban heat island effect large amounts of paved surfaces in cities absorb solar radiation and re radiate it as heat which increases the local air temperature. Researchers suggest policy planners could use green roofs in conjunction with existing. Of roofs with grass extensive green roofs is an effective alternative for significantly reducing the impact of urban air pollution. Reduces urban heat island effect and improves air quality.

Green roofs roofs that are planted with vegetation may improve the indoor air quality of commercial buildings by cutting the amount of ozone coming into the buildings from the outside. Because green roofs protect the roof membrane from harsh weather and ultraviolet uv radiation they can last twice as long traditional roofs. Therefore green roofs contribute to the reduction of a number of polluting air particles and compounds not only through the plants themselves but also by deposition in the growing medium itself.