Virginia Stovin, Simon Poe, Simon DeVille, Christian Berretta, The influence of substrate and vegetation configuration on green roof hydrological performance


A four-year record of rainfall and runoff data from nine different extensive (80 mm substrate) green roof test beds has been analysed to establish the extent to which the substrate composition and vegetation treatment affect hydrological performance. The test beds incorporated three different substrate components with different porosity and moisture retention characteristics, and three different vegetation treatments (Sedum, Meadow Flower and unvegetated).