Retaining Walls Clear Island Waters

Retaining wall options in Clear Island Waters

Garden walls near canals and lakes

On canal and lake frontage blocks, landscape retaining walls are usually about level changes between the house, the lawn and the waterfront edge. Revetment walls on the water itself are a separate specialist structure and not something we build, but garden walls, raised beds and walls around pool and entertaining areas are. Groundwater, sandy soils and drainage fall need to be considered carefully on low-lying sites.

Steps and garden beds built in

A new wall often needs steps through it or a garden bed along it. Designing those with the wall gives a cleaner result than adding them later.

Concrete sleeper walls in Clear Island Waters

Concrete sleepers between galvanised steel posts are the most common wall we build. They will not rot, they suit most residential heights, and woodgrain or stone-look faces make them easy to match to the house. Post spacing and footing depth are set to the height and whatever sits above the wall.

Timber sleeper retaining walls

Treated pine and hardwood sleepers remain the most economical option for low garden walls. We use timber rated for ground contact, detail it to shed water, and are honest about its shorter lifespan compared with concrete.

Block and tiered garden walls

Segmental block walls suit curved lines and tiered gardens. They need a compacted base and drainage aggregate, and depending on the system and height, reinforcement back into the soil, so we plan the excavation footprint and access around that.

Our process

1. 01

   Site inspection

   We look at the slope, soil, existing wall condition, access for machinery, boundaries and what sits above and below the wall.

2. 02

   Design and material choice

   Timber, concrete sleeper or block, wall height and line, drainage and any steps or garden beds that go with it.

3. 03

   Fixed-price quote

   An itemised written quote, including engineering and certification where the wall requires it.

4. 04

   Excavation and footings

   Machinery access, cut and spoil removal, post holes or base preparation and concrete footings.

5. 05

   Build and backfill

   Wall construction, ag drainage, gravel backfill, compaction and capping.

6. 06

   Finish and handover

   Topsoil, clean-up and a walkthrough, with any engineering or certification paperwork handed over.

Frequently asked questions