Riefa® Boards are a light weight, organic, economical alternative to a traditional green roof. Riefa® Boards can be fitted directly onto a root resistant, waterproof membrane, then covered in a layer of living vegetation. Riefa® Board can be used in conjunction with many types of vegetation, including sedum, wildflower, chamomile & herbs. A living roof covering has many benefits including energy conservation, extending the life of a roof. http://www.riefagreenroof.co.uk
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