Underground obstacles can significantly slow down or hinder the installation of a water management system. When carrying out earthworks, what happens if the contractor encounters old cables, pipes or foundation remnants underground? The owner of these must then be established, so that the obstacle can be moved or removed. There are no obstacles with Rockflow: this buffer system is easy to adapt to new or unforeseen situations.

Rockflow is a water management system made up of stone wool elements. It is used in virtually all places where flooding can occur. Under streets, for example, but also under squares, parks, roads or swales. The stone wool elements buffer the precipitation, and then gradually infiltrate it into the soil or discharge it into the sewer system. Rockflow consists of stone wool elements with a high buffer capacity: the material can absorb 95 per cent of its volume in water in a short period of time. What's more, the system is very flexible: you can create all kinds of shapes from the individual elements, just like with Lego.

Underground obstacles

A contractor may encounter a lot of things when carrying out groundworks. Old cables, empty pipes or foundation remnants are not always indicated on a plan, or their exact location is unknown. In older urban environments in particular, there are many obstacles under the ground that can have major consequences. In the worst case, these unexpected elements lead to stagnation of the work, resulting in delays and additional costs.

The flexibility of Rockflow

The loose stone wool elements from Rockflow can be adapted to these unexpected elements. In the case of unforeseen pipes or cables, a piece can be cut out of a stone wool element using a stone wool knife, so that the block can then be laid around the cable or pipe. The elements are easy to adapt without compromising the material's performance and buffer capacity. Because the existing cable or pipe can remain in place, work can continue as planned, without delay or additional costs.

Retrospective adaptations

Rockflow can also be used for modifications to an existing situation. If a new cable or pipe has to be laid at the site of an infiltration buffer a few years later, the stone wool blocks can easily be adapted to this. This is not usually so easy with other systems. Laying or "shooting" a new, crossing cable can cause a sewer pipe to leak. Furthermore, the construction of other infiltration systems is often complex, for example, because a geocloth has been applied, through which the new cable must pass, resulting in sand infiltration and subsidence of the street or road.

The agility of Rockflow

Rockflow offers flexibility – even retrospectively. The stone wool elements are relatively solid, which means that no leakage can occur, as could happen with a pipe. A new pipe can be pulled through the blocks without affecting the operation of the system. There is no risk of sand infiltration or subsidence of the road or street. It is also possible to cut away a piece of the stone wool in the place where a pipe is laid. This makes Rockflow future-proof. Will the situation above ground change, for example because a new residential area is being built? If so, the system can change with the situation. And are more homes being built or are extreme rain showers occurring more often than expected? The capacity of the buffer system can then be increased by adding stone wool elements. This ensures that the system remains flexible, even after installation.