How Does a Green Roof Help the Environment?
Green roofs are an excellent option for any sustainable home. More and more people are choosing to install green roofs onto their homes to create a structure that is going to benefit the environment for years to come. But how exactly does a green roof help the environment, and are they worth it?
In this blog, we’ll explain exactly how installing a green roof on your home can benefit the environment.
What is a green roof?
A green roof is a layer of vegetation planted over a waterproofing system that is installed on your home’s roof. It can either be planted on a flat or slightly-sloped roof and are commonly called eco-roofs or vegetative roofs. A green roof isn’t simply plants laid across a normal roof, it requires specific layers of roofing materials that are not found on normal roofs. This will include the vegetation, growing medium, filter membrane, drainage layer, waterproof layer, roofing membrane, thermal insulation, vapour control layer and structural roof support. This complex roofing can provide plenty of benefits, not just for you, but also for the environment.
The benefits include:
In towns and cities full of concrete, bricks and mortar, it’s refreshing to add an abundance of green wherever we can. Whether you live in the city or in the countryside, adding a layer of green plants to your roof can create a space that is much more appealing. This helps provide a clean, attractive space for everyone to enjoy and helps bring back some nature into otherwise built-up areas.
Mitigate the risk of flooding
Green roofs can help reduce the risk of flooding in comparison to buildings with standard roofs. Standard buildings are built to shed any rainwater that lands on them by using impenetrable roofs that cause precipitation that runs to the ground. Extensive run-off from roofs can pick up bacteria from animal waste, pesticides which then gets filtered into local water supplies. The plants on a green roof are able to suck up this rainwater, reducing run-off and excess water can even be used to flush toilets and irrigate other plants around the building.
Air pollution, particularly in cities, is becoming an increasing problem. And because air pollution can impact the health of animals, wildlife and humans, it’s a good idea to start cleaning it up. The more plants we put into our towns and cities, the cleaner our air will be. Green roofs can also help inhibit the circulation of particulate matter and dust, which lead to health problems.