By Ryan Somma [CC BY-SA 2.0 (https://creativecommons.org/licenses/by-sa/2.0)], via Wikimedia Commons

This report is a product of Life Programme and Arcadis


“In the urban environment, there is little space at ground level to tackle climate and water related issues. At the same time, a large amount of roof space in the city is unused. Roofs offer all kind of opportunities for use, and can make an important contribution to the quality of life and the quality of life in the city. Roofs can therefore be seen as an extension of the use area in the city. In accordance with the approach of the municipality of Rotterdam, we distinguish the following four categories of roofs (and preferably combinations of these):

  • Green roofs include vegetation. This can vary from sedum roofs or grass to higher vegetation, such as shrubs or trees.
  • Blue roofs are roofs that are specially designed to store and/or buffer as much water as possible. This can be done in combination with vegetation, such as on green roofs, or by building temporary rainwater storage.
  • Yellow roofs generate sustainable energy, for example by using solar panels, windmills and / or solar boilers.
  • Red roofs have space for recreation. You can think of a terrace, a sports field or a swimming pool. Ideal for efficient and effective use of living space in a busy city…”

Read the full report here.

Read more about this project at: Life Urban Roofs.