Experiment with constructed wet-roof for water purification - 01/12/2011


On the new office building of Van Helvoirt Groenprojecten [landscaping company], an innovative constructed wetland for water purification has been planned on a sloping part of the roof.

By combining the green roof and constructed wetland in this way, space is saved and efforts to create functional green will be ultimately materialized.

Since this green solution has not yet been applied anywhere else in the world, SHFT and ECOFYT started the experiment in a trial set-up at Van Helvoirt Groenprojecten on Wednesday 23 November, in cooperation with Delft Technological University.

The objective of this experiment is to compose a stable substrate that roots can easily go through and that meets all weight requirements, and to determine how long the water should stay in the filter, so that the water comes out clean and usable again.

It is expected that the experiment will be finished by the end of December so that the realisation of the constructed wet-roof can take place in February/March.

Joris Voeten

Van Helvoirt Groenprojecten is currently realising one of the most sustainable office buildings in the Netherlands. For the realisation of this office, Construction Team + was put together. Construction Team + is a concept of Wim van Dijk of Klostermann Nederland BV and is realised in practice in cooperation with Bert van Helvoirt of SHFT. Therefore we will also write about this unique project on this website. The realisation process can also be followed on www.duurzaamkantoor2011.nl (in Dutch).