The most important results:
The average temperature difference between the measured standard black roof and the vegetated Blue-Green roof system is 40 degrees celsius on summerdays. And where the conventional green roof evaporated 18 litres of water per m2 in a period of 14 days, the Blue-Green roof system evaporated 42 litres of water per m2 in the same period. On top of that the Blue-Green roof kept enough heat out of the building to eliminate the need for air-conditioning.
This project has produced results strongly supporting the development and inclusion of Blue-Green vegetated systems on excisting buildings and in new developments.