GF DREN B cavity drainage
GF DREN B cavity drainage – extruded cavity mat made of high-density polyethylene or polypropylene, combined with filtration geotextiles, which prevent the penetration of small particles of substrates from the supporting vegetation layer into the drainage layer.
| Profile height | 8mm | 
| Foil thickness | 0,5-0,6mm | 
| Surface weight | 550-650g> | 
| Compressive strength | 190-250 kN/m² | 
| Form of delivery | Rolls 2.0-2.5 m wide | 












