Noise Reduction Green Roofs

Studies have also shown that green walls also provide a noise barrier.

Noise reduction green roofs.

An example of a useful application of a green roof to achieve noise reduction is a building extension facing a nearby road. Green roofs are one of the most effective ways to reduce the ambient air temperature in urban areas. Effect of roof shape road traffic noise shielding in an urban setting is largely influenced by the specific roof shape even under the assumption of a similar building volume van renterghem and. They also have a sound absorption coefficient of about 0 40.

Reduction of urban heat island effect. A green roof is a practical solution to have roof absorption mitigating diffracting sound waves. Green roofs have excellent noise attenuation especially for low frequency sounds. The green roof noise reduction for heavy vehicles is also somewhat smaller than for light vehicles given the relative stronger low frequency content.

Generally speaking green walls provide a 15db reduction in sound. Green roofs have excellent noise attenuation especially for low frequency sounds as opposed to hard conventional roofs which tend to just deflect it. With regards to acoustic advantages green roof systems have been deemed an important structure in the reduction of noise pollution especially in urbanised areas. Green walls green wall basel switzerland.

Numerical simulations presented in refs. Green roofs can increase a building s marketability. During summer the temperatures in cities are approximately 5 7 c higher than in the countryside due to buildings and roads heat absorption and the temperature on the traditional roof can be up to 40 c higher compared to the green roof. 2 and 3 show the high noise reducing potential of green roofs compared to rigid roofs which are most often encountered.