Retention Roof - Flow Control Intensive
Verified by manufacturer 1 month ago
Retention roofs for intelligent rainwater management.
Application
- For intensive Green Roof build-ups subject to special requirements regarding overflow volume and outflow delay
- Suitable for inverted roofs.
Description
A retention roof flow control solution is suitable for intensive green roofs where there are special structural requirements with regard to flooding volume and runoff retardation. The Water Retention Box (WRB) is used as the water storage and drainage element. Depending on the requirements, the WRB element can be used for permanent water storage and/or as a temporary retention chamber for outflow delay.
Features and benefits:
- Very low outflow rate, thanks to a specifically adjusted flow control unit.
- Very high retention volume in the WRB 85 – approx. 80 l/m².
- Lightweight thanks to hollow-body drainage unit (WRB Water Retention Box).
- High evaporation capacity thanks to integrated capillary system.
- Very high compressive strength.
- Basic prerequisite: 0° roof.
- Suitable for inverted roofs.
- Also available as a public roof.
- Fulfils the requirements of the FLL Green Roof Guidelines.
General information
Color | Green Brown Black |
Finish | Natural |
Material | Vegetation Acrylonitrile butadiene styrene (ABS) Plastic |
Shape | Square Rectangle Other |
Length | Bespoke |
Width | Bespoke |
Height | Bespoke |
Uniclass | |
CAWS | Q37/110 Intensive green roof |
Specification data - Intensive green roof systems
Classification data | |
Protection | |
Protection layer | Protection and storage fleece RMS 900. Guidance for specification option:
|
Moisture control | |
Drainage layer | Water retention box WRB 85. Guidance for specification option:
|
Filter membrane | Suction and capillary fleece RMS 500K. Guidance for specification option:
|
Drainage ancillaries | Capillary bridge and flow control unit. Guidance for specification option:
|
Planting systems | |
Planting medium | Intensive substrate i 4 (230–400 mm). Lawn substrate R (200–300 mm). |
Planting requirements | Intensive roof greening. |
Fire breaks | Manufacturer guidanceConsult manufacturer for details and insert requirements or omit. |
Edge restraints | Manufacturer guidanceConsult manufacturer and insert requirements.
|
Weight | 320 kg/m² (3.2 kN/m²). |
System depth | From 330 mm. Manufacturer guidanceBuild-up depth. |
Roof pitch | 0°. |
Discharge | Manufacturer guidanceProject specific settings possible. Consult manufacturer for details and insert requirements. |
System accessories | Manufacturer guidanceSystem add-ons available. Consult manufacturer for details and insert requirements. |
Sustainability data
Country of material origin | Europe |
Country of product manufacture | Europe |
Material | Vegetation Acrylonitrile butadiene styrene (ABS) Plastic |
Recycled contentAs defined in clause 7.8 of BS EN ISO 14021 | Manufacturer guidanceRMS 300 - 100% recycled plastic fibre (PP/PES/acrylic) |
Literature
Literature type
Optigrün Technical Brochure
Optigrün Retention Roof - Flow Control
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