Drainage Material Perl 8-16 LA
Optigrün Drainage Material Perl 8-16 LA is used as a drainage layer beneath intensive green roofs without water accumulation and as pressure resistant drainage and equalization layer beneath paving.
| Material | Lava |
| Grading | 8 - 16 mm |
| Salt content | < 0.2 g/l |
| Max. water capacity | 12 Vol% |
| Water permeability | > 600 mm/min |
| Weight dry | approx. 1,020 kg/m³ |
| Weight when saturated | approx. 1,150 kg/m³ |
