Drainage Material Perl 2/10 BS

Optigrün Drainage Material Perl 2/10 BS is used as a drainage layer beneath extensive and intensive green roofs without water accumulation, for pressure resistant filling of Drainage Boards and as pressure resistant drainage and equalization layer beneath pathways.

Material Expanded shale
Grading 2 - 10 mm
Frost resistant DIN 4226
Salt content < 0,5 g/l
Max. water capacity 11 - 19 Vol%
Water permeability > 420 mm/min
Weight dry 560 kg/m³
Weight when saturated 670 kg/m³