Retaining Walls Timber

About Our Retaining Walls Work in Sydney

Retaining Walls in Sydney is as much about access and set-out as it is about materials. On everything from flat river plain to steep sandstone escarpment, getting the sequence right is what keeps a job to program.

The honest starting point for retaining walls in Sydney is that you are dealing with ground conditions that change completely between one side of the basin and the other. Everything we specify follows from working with that rather than pretending it is not there.

The retaining walls we install around Sydney has to deal with reactive shale clay in the west, sandstone and sand through the coast and north and with the full spread of Sydney housing, from Victorian terrace to new release estate. Those two things between them explain most of what we recommend and most of what we advise against.

If you want a straight answer about what your Sydney site actually needs, call 0492 879 796 and we will come and look at it.

Specification Notes for Sydney

Everything we install carries a manufacturer specification, and we install to it. Warranty claims fail on installation detail far more often than on product defect.

The parts you cannot see once the job is finished are the parts worth paying for: footings, drainage, fixings and substructure. That is as true in Sydney as anywhere.

• Segmental block walls resist by mass and setback, and taller ones need geogrid reinforcement into the retained soil.
• A retaining wall fails because of water pressure far more often than because of the weight of soil.
• Height thresholds and proximity to a boundary are the two things that most often trigger a council approval requirement.
• Drainage behind a wall is aggregate, a geotextile separation layer and an agricultural line taken to a legal discharge point.
• A wall on reactive clay has to allow for the ground swelling behind it, not just the static soil load.

When Retaining Walls Needs Replacing

In Sydney, this work is rarely a simple like-for-like replacement, largely because of coastal salt exposure on one side of the city and cracking clay on the other. The set-out matters as much as the material, and that is where a job either reads properly or does not.

• Timber sleepers that have rotted at the base course
• A level change that was filled rather than retained
• A wall built without allowance for the driveway sitting above it
• Water weeping through the face because there is no drainage behind it

Retaining Walls Options in Sydney

Soil, Slope and Access in Sydney

It is worth knowing about a very wide range of housing eras with different original boundary types before you commit to a design. It does not rule anything out, but it changes the detail and it belongs in the quote rather than in a conversation on the day.

Tree cover and root zones matter around Sydney. Roots are worked around rather than cut through, both because the tree matters and because a cut root under a footing is a future problem.

We allow for access constraints that vary from a wide western verge to an inner-west rear lane because it drives material selection more than aesthetics do. Specifying around it costs a little more once and saves replacing the job early.

How the Work Is Sequenced

We photograph the site before we start and again at completion. On a Sydney job that record settles most questions about what was there and what changed.

Rubbish and old material leave with us. Around Sydney, dealing with councils that each interpret the same state controls slightly differently makes storing a pile of demolition on site awkward for everyone, so removal is priced in rather than added later.

• Sandstone block and boulder walls
• Repairs to failed and leaning walls
• Segmental block and modular systems
• Timber sleeper walls
• Engineered walls with certification
• Concrete sleeper walls with steel posts