The Polder Roof transforms a flat roof so that it is able to collect and store water. This storage is controlled and can be drained at any chosen moment. The Polder Roof functions as a foundation for a green roof, roof garden, solar park or roof park.
ProSystem prototype demonstration in operational environment.
Prototype near or at planned operational system. Represents a major step up from TRL 6 by requiring demonstration of an actual system prototype in an operational environment.
The Polder Roof has already been implemented on several pilot roofs in the Netherlands. We want to test en optimize the algorithms that decide to retain the stored water or not. We intend to enhance these algorithms, add (probabilistic) forecasts and models and test them on a Field Lab at the Civil Engineering faculty of Delft University.

How does it work?

The Polder Roof consist of a buffer system and a Smart Flow Control. Rainfall is directly stored in a buffer system on a flat roof. The standard capacitiy of this buffer system is 70 mm. This storage is automatically controlled by our Smart Flow Control (SFC) which collects meteorological data and communicates with a web-application. The Smart Flow Control uses algorithms to decide to retain the stored water or not.