RETENTION ROOF MEANDER FKM 30
- System solutions with defined water retention
- High level of reduction of of water discharge during high intensity rainfall whilst retaining good drainage (even for large roof areas)
- Peak discharge
- Discharge coefficient Cs (according to FLL): 0.01 - 0.17 at 2° roof pitch
- Water storage and discharge delay.
- Suitable for blue roofs
- For green and gravel roofs