Filter and capillary fleece FIL 200K
The Optigrün filter and capillary fleece is a filter layer between the water retention boxes and the substrate layers with a particularly good capillary effect.
Product properties
Material | 100% polyester/polyamide (PES/PA) |
Flächengewicht | approx. 180 g/m² |
Georobustheitsklasse | GRK 3 |
Wasserspeicher | approx. 1.4 l/m² |

Area of use
- Horizontal filter layer for green retention roofs
- Between water retention boxes and substrate
- Filtration of fine particles from the substrate
Specific properties
- Fleece with microfilament technology with particularly good capillary effect
- For the extensive distribution of stored rainwater from the drainage level into the substrate layer and to increase evaporation performance
- Low weight
The unique microfilament technology
Microfilament technology in green roofs offers a sustainable solution for supplying plants with water by efficiently storing and distributing moisture. It is used particularly in intensive green roofs to transport water in a targeted manner and reduce evaporation losses.
Advantages of microfilament technology for Optigrün retention roofs
- Optimum water supply
Thanks to the specially developed microfilament technology, stored rainwater is transported upwards from the drainage level and evenly distributed in the substrate layer. - Reduced watering requirements
Thanks to capillary water distribution, moisture is continuously available to the plants, even during dry periods. - Better plant development
Even water distribution increases water availability for the vegetation and evaporation performance
Capillary force made visible - the Optigrün filter and capillary fleece FIL 200K in action
Our video shows the fascinating capillary power of the Optigrün filter and capillary fleece FIL 200K, made possible by the unique microfilament technology. See for yourself how water finds its way seemingly effortlessly. Precise. efficient. sustainable.