Intensive green roof – thickness 15-150 cm, weight 300 – 1500 kg/m2 (such weight requires adequate load carrying structure). It might be compared to the regular garden, therefore it is often called a „garden on the roof”. The vegetation includes bushes, trees, perennials and grasses, and requires significant nurturing effort (watering, cutting, fertilization, weed control – as with normal garden). Intensive green roof is more expensive than the extensive one.
The GRAD project is financed from the European Climate Initiative (contrach number: 81232154) of the German Federal Ministry of the Environment, Nature Conservation and Nuclear Safety (BMU). The EUKI competition for project ideas is implemented by the Deutsche Gesellschaft für Internationale Zusammenarbeit (GIZ) GmbH. It is the overarching goal of the EUKI to foster climate cooperation within the European Union (EU) in order to mitigate greenhouse gas emissions.