Rain water drainage

Efficient water management with Rockflow

Drain rainwater quickly and efficiently with Rockflow

It rains more often and harder in the Netherlands. The extreme downpours that the KNMI had predicted for 2050 are already falling now. And all that water has to go somewhere. If rainwater cannot sink into the soil or cannot be discharged quickly enough, the sewer system will become overloaded and the water will end up in the street. With severe flooding and damage as a result. Think of flooded tunnels, polluted ditches and roads that have to be closed. Now that our climate is changing, the importance of smart water management is increasing.

An installation depth of 38 cm for Rockflow applications has proven to be technically feasible, reliable and safe. This offers possibilities, for example in the case of a high groundwater level.

In the Limburg municipality of Maasbracht, the Rockflow system has been successfully used as a rainwater sewer with a total length of almost 3 kilometres.

Rockflow stone wool is a natural material that is produced in a sustainable way.

Advantages of Rockflow

Stone wool is a durable, surprisingly versatile and remarkably strong material. For example, an independent load-bearing capacity test has shown that an installation depth of only 38 cm is sufficient for Rockflow. And that offers opportunities, especially in places where the space to collect water underground is limited. For example, where there are shallow cables and pipes, or a high groundwater level. Rockflow thereby limits the risk of flooding, including in urban environments and even during extreme rainfall.

The Rockflow system is used underneath roads, streets, squares, car parks, industrial estates, water channels or other locations where flooding can occur. The system buffers the water from even the heaviest showers. In the meantime, the functionality of the above-ground facilities remains fully intact, and flooding is prevented. This keeps the city vital and future-proof.

Check out all the possibilities of Rockflow

Applications for rainwater drainage

How can rainwater be drained away in a short period of time in order to reduce the risk of flooding? Rockflow has developed an innovative infiltration system, made up of durable stone wool elements. These elements quickly absorb the water and discharge it to the soil in a controlled manner. The Rockflow system can be set up in such a way that the buffer capacity is available to absorb new showers once more within 24 hours.

The Rockflow system is applied under roads, streets, squares, parks, swales and industrial estates. Read more about the application by area here.

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Rockflow infiltration systems

Parks and swales

In residential areas, a swale must be relatively deep to function properly, which can lead to unsafe situations and difficult maintenance. With Rockflow stone wool elements, a swale can be made shallower, without loss of capacity and the green appearance.

Squares and car parks

Urban areas are largely paved by roads, squares and parking places. The risk of flooding is greatest in these paved areas. Rockflow limits the risk of flooding on squares and parking spaces, even during extreme rainfall.

Alongside and beneath the road

Rainwater that falls on paved surfaces, such as on roads, cannot sink into the ground, which can cause serious flooding. The Rockflow infiltration system, made up of stone wool elements, can be used to buffer water and slowly release it into the ground.