How it works
The drainage layer is to absorb and distribute rain and to lead it to the drains. As this layer in the sports ground is located directly below the turf-bearing layer, the drainage layer is not to be built from slag or other materials that are hostile to vegetation.
Nowadays the grain size in the drainage layer is adjusted to the grain size of the turf-bearing layer. The maximum grain size should not exceed 32mm. As for the filling of the drainage, equal grain distribution and therefore appropriate stability and filter quality are of great importance. Every material our company uses is tested by our certified laboratory partners before use.
The drainage layer is installed with a tracked vehicle that operates backwards. Only tracked vehicles are to drive on the drainage layer during installation. We use tracked vehicles with chains for soft ground and completely automatic laser control to keep ground pressure to a minimum. Completely automatic laser control ensures that the roof pitch is exactly 0.8 % on the entire sports turf area.