Public Roof Retention
- Suitable for traffic areas.
- Water Retention Box WRB, including Flow Control system.
| Weight | from 400 kg/m² or ab 4,0 kN/m² |
| Build-up depth | from 250 mm |
| Roof pitch | 0° |
| Load class | 1-3 (max. 160 kN/m2 and 16 t vehicle weight) |
Top Layer
Pavement or slab covering, covering height depending on load class.
Bedding Material
- E.g. bedding stone chippings 0–5 mm (30–50 mm)
- Screed layer for surfacing material
Base Layer
Base layer of gravel 0-32 mm resp. 0-45 (height 150 mm minimum)
Filter Fleece FIL 300
Prevents fine particles from forming sludge in the drainage layer; high water permeability, very high robustness class GRC 5
Productdetails: Filter Fleece FIL 300
Water Retention Boxes WRB 85i, WRB 85v or WRB 150*
Infiltration trough made of recycled PP intended for surface drainage in combination with a Flow Control System; high water retention potential
Productdetails: WRB 85i WRB 85v WRB 150
*Selection according to load class, roof construction and required accumulation height. Please contact our Technical Department.
Flow Control System
(not shown in the drawing)
- Throttle with defined perforations that allows a delayed water discharge
- Permanent accumulation of stormwater possible up to a defined hight
Protection, Separation and Slip Layer SGL 500 and Separation and Slip Sheet TGF 0.2
Productdetails:
