Drainage Material 8-16 BS
Optigrün Drainage Material 8-16 BS is used as drainage layer beneath extensive and intensive green roofs, for pressure resistant filling of Drainage Boards and as lightweight drainage and equalization layer beneath paving.

Material | Expanded shale |
Grading | 8 - 16 mm |
Frost resistant | DIN 4226 |
Salt content | < 1.0 g/l |
Max. water capacity | 16 Vol% |
Water permeability | > 420 mm/min |
Weight dry | approx. 730 kg/m³ |
Weight when saturated | approx. 890 kg/m³ |