Water retention box WRB 85L
Water Retention Box made of recycled PP material. With a high temproary and possibly permanent retention volume in combination with a Flow Control System for specific regulations of water discharge and/or water storage.
New! Available from June 2026
Product properties
| Material | Recycled PP |
| Nominal thickness | approx. 85 mm |
| Grammage | approx. 3.0 kg/m² |
| Retention volume | approx. 82.0 l/m² |
Area of use
- For the construction of retention roofs on roof areas with 0° roof pitch
- Suitable for use under extensive greening
- Use on insulated roof structures is only possible in accordance with the specifications of the Optigrün organigram for retention roofs
Specific properties
- For temporary and/or permanent storage of rainwater with regulated water discharge through a Flow Control System
- With Capillary Bridges to transport stored rainwater from the drainage level into the substrate layer and to increase evaporation (accessories)
- High compressive strength
- With freely flowable structure for quick distribution of rainwater within the retention room
- Suitable for inverted roofs (when used on inverted insulation, no permanent water storage is possible)