Concrete sleeper retaining wall in a South Australian backyard

Supply & install · Virginia SA · Est. 2010

Concrete sleepers,
built for the long run.

Factory-direct concrete sleepers and under-fence plinths from Virginia, South Australia. Supply direct from the yard — or have our crew install across Adelaide metro.

Why South Australians choose us

Factory-direct from Virginia. Metro Adelaide quotes back within 24 hours, with country runs scheduled around your build week.

15+

Years casting

1.8M+

Sleepers sold

100%

SA owned & made

We service
VirginiaGawlerElizabethMunno ParaSalisburyAdelaide CBDMallalaTwo WellsRoseworthyBarossa ValleyTanundaAngle ValeSmithfieldAndrews FarmKapundaFreelingWilliamstownLyndochVirginiaGawlerElizabethMunno ParaSalisburyAdelaide CBDMallalaTwo WellsRoseworthyBarossa ValleyTanundaAngle ValeSmithfieldAndrews FarmKapundaFreelingWilliamstownLyndoch

15+

Years experience

1.8M+

Sleepers sold

Supply

& install · Adelaide metro

24h

Quote turnaround

What we stand for

Three things you can hold us to.

We started Fence Plinths because landowners and builders deserve better than ringing a hardware giant and being put on hold.

Meet the team
  • 01

    We tell it straight.

    An honest quote and honest advice — what your site actually needs, not the biggest order we can write.

  • 02

    Built to hold.

    Cast to Australian standards to carry real load for decades. The wall outlasts the fence on top of it.

  • 03

    Supply or supply & install.

    Pick up from the yard, get it delivered, or have our crew build the wall for you across Adelaide metro.

Plan your wall in 30 seconds

How much concrete will it take?

Tell us the run, the height and the style. We'll give you the rough sleeper, post and ag-pipe count so you walk into the quote with your numbers ready.

Want a hand instead? Call 0431 515 310.

Wall calculator

Sketch a quick estimate

Courses

3

Sleepers

15

Ashwood Woodgrain Sleeper

Posts

6

galv I-beam

Ag pipe

11m

  • · Estimate only — final quantities confirmed on site/quote.
  • · Posts assume galvanised I-beam set in concrete footings.
  • · Posts spaced every 2.4m (one each end + at every join).
Charcoal concrete sleeper wall in a backyard

Our story

"We make every sleeper that leaves the yard. If something's wrong, you ring me — not a call centre."

— The Virginia yard

Based in Virginia, just north of Adelaide, we've spent 15 years casting sleepers and plinths for backyards, acreages and commercial sites across South Australia. Because we make what we sell, there's no markup chain — factory-direct prices and advice from someone who's actually built a wall.

More about us

How it works

Four steps. No surprises.

  1. Step 01

    Pick a style

    Browse the range and pick the finish that suits the build.

  2. Step 02

    Get a quote

    Use the calculator or ring the yard. We'll firm up the numbers.

  3. Step 03

    We deliver

    Same-day metro Adelaide. Country runs sorted with the schedule.

  4. Step 04

    You build

    Or we'll point you to a trusted installer who knows our gear.

Ring the yard. Talk to a real person.

Quotes come back from us — not from a generic inbox. Same-day metro dispatch, country runs sorted around the schedule.

Cutting a concrete sleeper to length

Factory seconds

Pay less for a cosmetic chip.

Every batch has a few sleepers with minor cosmetic marks that don't affect strength. We sell them at a discount when we have them — usually for walls below ground or behind a fence.

Ask when you call — stock changes weekly.
Cutting service$20 per cut

Engineering reference

Max height diagram.

A quick guide to the maximum retaining wall heights you can build from our most popular sleeper sizes. Pair the sleeper length, thickness and reo combo with the right galv post and you're good to go — call the yard if you'd like us to double-check your spec.

2mhigh

80mm

2 × N10

3.6mhigh

100mm

2 × N10

5mhigh

130mm

2 × N12

Length 2.0m
1.2mhigh

80mm

2 × N12

2.4mhigh

100mm

2 × N12

4mhigh

130mm

2 × N12

Length 2.34 & 2.4m
1mhigh

100mm

3 × N12

3mhigh

150mm

3 × N12

Length 3.0m
2mhigh

200mm

2 × N16

Length 4.0m

Heights shown are indicative maximums for a properly engineered wall on suitable footings. Site conditions, surcharge loads and drainage all matter — when in doubt, give us a ring.

Delivering across SA
VirginiaGawlerElizabethMunno ParaSalisburyAdelaide CBDMallalaTwo WellsRoseworthyBarossa ValleyTanundaAngle ValeSmithfieldAndrews FarmKapundaFreelingWilliamstownLyndochVirginiaGawlerElizabethMunno ParaSalisburyAdelaide CBDMallalaTwo WellsRoseworthyBarossa ValleyTanundaAngle ValeSmithfieldAndrews FarmKapundaFreelingWilliamstownLyndoch