Maximum Evaporation Capacity with an “Urban Climate Roof”

Increased soil sealing and climate change have the effect of heating up inner cities far more than the surrounding areas through thermal radiation. 

The innovative system build-up “Urban Climate Roof” is designed for maximum evaporation which can contribute actively to urban climate control, particularly during hot, dry periods. This very high evaporation capacity is achieved by means of a specially developed plant community in conjunction with a needs-based irrigation system.

The core element of the system build-up “Urban Climate Roof” is the highly capillary Aquafleece AF 300 in conjunction with driplines. If there is no rainfall, irrigation will take place using an automated system. The pulsating, brief irrigation at short intervals means that water is continuously available. It reaches the overlying substrate through the capillaries and is actively evaporated by the plants.

Types of irrigation with an “Urban Climate Roof”

Stormwater Management: Stormwater can be stored during precipitation and used for irrigation during dry periods, given the right climate conditions and project circumstances.

Using Grey Water: The advantage here is that it is always available as a water resource, even in the dry heat of summer. The plants were selected as part of a large-scale research project (funded by the Deutsche Bundesstiftung Umwelt – German Federal Foundation for the Environment) specifically due to their suitability for irrigation with grey water.

Ground Water Management: If the quality of the ground water is suitable and it can be made available economically, this type of irrigation is an effective means of large-scale active evaporation.

System build-up

Notes: 

* The weight values stated above are considered to be exclusive of vegetation, see Info Sheet "Green Roof Ballast".