Public roof - without slope
Traffic areas on flat roofs without a roof slope of the waterproofing layer require adapted construction methods. Standing water on the waterproofing must be decoupled from the base and bedding layer using suitable drainage systems.
System structure public roof - without slope
Note: Click on the marked points to get more information!
Paving
- Height 60-120 mm
- Surface layer (e.g. interlocking paving, slabs, concrete)
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 or 0-45 mm (0-22 on heights less than 120 mm)
Filter fleece FIL 300
- Prevents fine particles from forming sludge in the drainage layer
- high water permeability
- very high robustness class GRC 5
- learn more: Filter fleece FIL 300
Building protection and drainage element FKD 60BU
- Pressure resistance and accessible by trucks
- Prevents accumulation of water
- Lightweight build-up with high drainage capacity
- Filled with Perl 8/16
- learn more: Building protection and drainage element FKD 60BU
Protection, seperation and slip layer SGL 500 and seperation and slip sheet TGF 0.2
- learn more: Protection, seperation and slip layer SGL 500
- learn more: Seperation and slip sheet TGF 0.2
Technical specifications
| Weight | from 500 kg/m² or 5.0 kN/m² |
| Layer height | from 260 mm |
| Roof pitch* | 0-5° |
| Load class | 1-3 |
* Roofs with zero degree falls do not meet FLL Green Roof Guidelines and Optigrün systems should not be used without consultation.
Downloads
- Checklist (pdf) 175 KB
- CAD-Drawing (pdf) 1,000 KB
- CAD-Drawing (dwg) 1 MB