Green Roofs: their existing status and potential for conserving biodiversity in urban areas (ENRR498)

This report assesses the potential for green roofs to benefit the conservation of biodiversity in urban areas. It takes forward an earlier report (Roof gardens – a review) published by English Nature’s predecessor, the Nature Conservancy Council, in 1990, and reflects a renewed groundswell of interest in green roofs in recent years. The introduction considers the huge untapped potential of roofs and the advances being made in roof greening in Germany, where 13.5 million square metres of green roof were installed in 2001.