'Nothing expresses your principles quite like a green roof. Lee Evans, Founder of Organic Roofs promotes the aesthetic benefits of a green roof. And with your roof helping to filter rainwater, you’ll be giving the critters in the garden below better water quality too.' 5. 'Alongside this, you’ll provide a natural habitat for local wildlife, especially if your choose flowering plants - a favourite of the struggling bee. It’s been estimated that a 1m2 green roof can take up to 5kg of emissions each year, which is the same amount as a regular car will emit during an 80km drive,' explains Tom Mckinna, designer at Resi. First, the added greenery helps remove dangerous CO2 from the atmosphere. 'As well as benefitting your home, a green roof really comes into its own in terms of environmental impact. They provide additional oxygen and contribute to the reduction of the `UHI' or Urban Heat Island effect, reduce solar radiation and help to decrease air pollution. Just like a living wall idea, the ecological benefits of roof gardens are endless. They provide sound insulation too, due to the combination of trapped air within the soil and plants absorbing the frequencies. Green roofs can also add a layer of insulation to your home, giving you extra warmth in the winter months. Extensive roofs are easier and cheaper to install than ‘intensive' roofs. Usually a sedum mat is placed underneath the vegetation these are wind, frost and drought resistant which makes them an ideal foundation for your plants. ‘Extensive' roofs require minimal upkeep and have plants that need little watering. You’ll also find those extra layers can help reduce noise pollution, as well as provide a higher level of fire resistance!' 2. This is thanks to the underlying structure being protected from mechanical damage, ultraviolet radiation, and extreme temperatures. Tom Mckinna, designer at Resi says, 'Living roofs have shown to almost triple the life expectancy of the roofing below. Living roofs offer so many advantages, including increasing a roof’s lifespan by protecting it from the elements, combating heat loss and saving on energy, improving the local air quality, creating water attenuation, minimising maintenance, reducing sound transfer through buildings and providing an aesthetic appeal. They have become a popular way to add another dimension of green space to a garden, particularly in urban gardening and new-builds that aim to blend with the surrounding environment. (Image credit: Archic) What is a green roof?Īlso known as a ‘living roof’, a green roof is a roof of a building that is partially or completely covered with vegetation, which is most often sedum.
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