Ag pipe (agricultural pipe, also spelled agi pipe) is a slotted, flexible pipe that collects ground water through its slots and carries it away — used behind retaining walls, in garden beds and across wet or boggy ground.

In fine or silty soils, yes — a filter sock stops soil clogging the slots and keeps the drain flowing. Surround the pipe with free-draining drainage gravel and wrap the trench in geofabric for the best result.

Lay ag pipe along the base behind the wall, surround it with drainage gravel, wrap it in geofabric, and run it to a suitable outlet. See our retaining walls & sleepers range.

Drainage cell provides drainage in a slim profile — planter boxes, green roofs, podium decks and behind walls where there isn't room for a gravel drain.

Yes — by the cubic metre across Melbourne, Geelong, the Mornington Peninsula and the Surf Coast.