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 |
