How sedum plants protect against noise

2 min read

urban green roofs

How sedum plants protect against noise –  A sedum green roof can potentially half the amount of noise pollution entering your home. Perfect for those seeking peace in busy urban areas.

Green Roofs Are Great As Natural Sound Proofing

Beyond the ecological and environmental advantages that your green roof provides, there are also a number of social benefits. With the pace of everyday life ever-increasing, the urban side effects on our neighbourhoods often come at a high price. However, here at Turfonline, we strive to create equilibrium between modern society and a healthy environment.

reduce noise with sedum

Green Roofs Provide Noise Attenuation

When it comes to noise green roof systems can be important in the reduction of noise pollution, especially in urbanised areas. Green roofs have excellent noise attenuation, especially for low frequency sounds. Conversely, hard conventional roofs tend to just deflect it. It is the combination of both substrate and plants, along with the layers of trapped air within green roofs that make them an ideal solution as a natural sound insulation barrier.

How Green Roofing can protect against noise

Each component plays an important role. The growing medium acts as barrier to lower frequencies. The plants focus on obstructing higher frequencies. In an already noisy urban environment this helps. This same soft layer of sedum blanket on your green roof also improves the buildings sound insulation properties, thus reducing sound pollution within.

Understandably the extent of this is dependent on the system that you have chosen and the substrate depth. The International Green Roof Association (IGRA) indicates that on average your green roof can reduce sound reflection by up to 3 dB. It can also improve sound insulation by up to 8 dB. This is extremely advantageous, even more so for those who live close to airports or noisy industrial areas.

Additional Benefits Of Green Roofs

Studies by the IGRA also show that electromagnetic waves from transmitting stations can be effectively shielded by the vegetation layer. Although the risk posed by electromagnetic radiation (from wireless devices and mobile communication) to human health is still a question for debate, it has already been widely established that green roofs are capable of reducing electromagnetic radiation penetration by 99.4% (Herman 2003).

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