Protection and Drainage Board FKD 60BU
Optigrün Protection and Drainage Board FKD 60BU under public roofs with and without roof pitch, filled with Drainage Material Perl 8/16 or chippings 2/5.
Product properties
Material | Recycled HDPE |
Nominal thickness | approx. 60 mm |
Grammage | approx. 2.3 kg/m² |
Water discharge capacity | i = 0.02 (=2 % roof pitch): 2.29 l/(m*s) |
Compressive strength filled | approx. 650 kN/m² with 10% compression, filled flush with chippings 2/5 |

Area of use
- Under public roofs with and without roof pitch, filled with Drainage Material Perl 8/16 or chippings 2/5
Specific properties
- In filled condition usable under public roofs of the use categories N1 (walkable) to N3 (use by cars and occasional traffic by trucks up to 20 t) in the Optigrün system structure
- Suitable for non-pitch roofs
- Rapid draining of excess water
- Vapour permeable
- suitable for inverted roofs
- Lightweight super structure with high drainage capacity
- Surrounding edge overlaps
- Filling without risk of shifting apart
- Cross and T-joints possible
- minimal offcuts