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Sharrow School is one of the green roof projects undertaken by Atmos
http://www.greenbuildnews.co.uk/images/img/articles/297_198/Articles_414_1_1311929716.jpg
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The company has reviewed various statistics relating to green roofs and found the benefits include:
- insulating buildings and cutting energy costs. Recent studies show green roofs save two litres of fuel oil/m² per year.
- cutting the rate of heat absorption through the roof of a building by up to 84%, reducing its temperature and the need for cooling. This leads to further energy savings.
- lasting between 2.5 to 3.5 times longer than roofs made from standard materials, reducing roof repair and replacement costs.
- reducing urban pollution levels. 1m² of grass roof can remove 0.2kg of airborne particulates every year. They can also store chemicals and pollutants falling in the rain that would otherwise go directly into drainage systems.
- helping companies and organisations manage excess water in storms by retaining 50-60% of the total annual runoff volume in an average development, and alleviate flooding issues by retaining 90-100% of the critical first hour of heavy rainfall. This reduces drainage costs.
- providing excellent habitation areas for insects, birds and other wildlife, increasing local ecology/biodiversity.
- contributing towards government-set sustainability targets (e.g. BREEAM assessments).
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