Drainage Scoria
Lightweight volcanic scoria that drains fast behind retaining walls and around ag pipe.
- Orders under 1m³ require manual pricing — please contact the store to order.
- Delivery limits apply due to volume and loading constraints; some orders may require separate deliveries.
Drainage scoria is a lightweight volcanic rock full of open pores, which makes it drain quickly and weigh far less than solid stone. It is the go-to backfill behind retaining walls and around ag pipe in drainage trenches.
Water runs straight through it instead of building pressure against a wall or footing. The light weight also helps over podium slabs and in planter boxes where load matters. Available in 20mm and 7-10mm.
- Fast drainage behind walls and in trenches
- Lightweight, easy to shovel and barrow
- Sold per cubic metre
Related Products
Crush Rock 20mm
A hard-wearing 20mm crushed rock for driveways, pathways and a firm compacted base.
Rock Dust
Fine 5mm crushed rock that packs down tight as a bedding layer under pavers and slabs.
Crushed Rock CL4 - 20mm
20mm Class 4 crushed rock ideal for driveways, paths, compacted bases and general construction use.
POPULAR Aggregate (Bluestone)
Clean bluestone aggregate for exposed concrete, general concreting and drainage.