Drainage Board 8mm (Geofab backing) 2m x 20m
High-flow 8mm dimpled drainage board with geofab backing for reliable subsurface drainage. Filters fines, protects waterproofing, and relieves water pressure behind walls and planters.
This 8mm drainage board features a bonded geofab backing to create a high-flow path for water while screening out soil fines. It forms a continuous drainage and protection layer that relieves hydrostatic pressure and helps safeguard adjacent waterproofing membranes. Ideal for use behind retaining and basement walls, in planter boxes, under slabs, and on green roofs, it suits both vertical and horizontal applications. The profile promotes consistent water movement to designated outlets and helps maintain dry, stable structures. The dimpled core establishes durable flow channels and an air gap, while the geofab acts as a filter to reduce clogging and maintain long-term performance. The material is tough, rot-proof, and resistant to typical ground conditions. Lightweight and easy to cut, it installs quickly with minimal disruption. Fit with the fabric facing the backfill, overlap adjoining sheets, and direct water to drains or weep holes as designed. Compatible with most common waterproofing systems and fixings; follow project specifications for attachment and detailing.
Data sheet
- Primary Applications
- drainage
- Unit of Measure
- dimple height 8mm, plus geotextile layer
- Length
- 20m
- Width
- 2.0m
- Product
- drainage sheeting
- Compressive Strength
- 250 kN/m2
- Colour
- black
Specific References
- EAN13
- 9352845001294