Optigrün Drainage and Storage Board FKD 25 is installed beneath single or multi-layered extensive green roofs with roof pitches of up to 5° or beneath pedestrian pathways in gravel beds without condensed support layers.
CHARACTERISTICS
Material Recycled HDPE
Max. compressive strength unfilledapprox. 200 kN/m² (DIN EN ISO 25619-2)
Water discharge capacity
(DIN EN ISO 12958)i = 0.02 (=2 % roof pitch): 1.41 l/(m*s)
Nominal thicknessapprox. 25 mm
Grammageapprox. 1,350 g/m²