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Ashwood concrete sleepers are steel-reinforced (40–50 MPa) retaining-wall sleepers with a warm grey-brown timber-look finish — sitting between cool charcoal and traditional woodgrain. 200mm high in 80 and 100mm thicknesses and 1800–2400mm lengths, they stack horizontally between galvanised steel posts. Australian-made, termite- and rot-proof, delivered Australia-wide by Retaining Walls Direct.
Written and product-checked by the Retaining Walls Direct team — supplying concrete sleeper retaining walls across Australia. Last updated: June 2026.
The Ashwood concrete sleeper suits homes with a natural, earthy palette — federation, Hamptons and contemporary alike — and pairs beautifully with natural stone, timber decking and native plantings, with the strength and zero-maintenance performance of steel-reinforced concrete. Built to the principles of AS 4678 Earth-retaining structures.
Thickness: 80mm suits standard residential walls; 100mm is the heavier-duty option for taller walls or wider post spacing. Length: longer sleepers mean fewer posts but a higher load per post. Each course is 200mm high, so a wall needs about 5 sleepers per metre of height, per bay — use the retaining wall calculator or the concrete sleeper buying guide.
| Finish | Ashwood — warm grey-brown timber look |
|---|---|
| Height | 200mm |
| Thicknesses | 80mm · 100mm |
| Lengths | 1800 · 2000 · 2400mm |
| Strength | 40 MPa standard / 50 MPa heavy duty |
| Reinforcement | Steel reinforced |
| Brand | Retaining Walls Direct (Australian-made) |
| Compliance | AS 4678-2002 Earth-retaining structures |
Ashwood gives you the timber look without the downsides: it won't rot, warp, split, splinter or attract termites, needs no oiling or staining, and lasts far longer than a timber sleeper in ground contact — lower cost over the life of the wall.
Pair with galvanised steel posts — C-channel for walls under 1.0m, H-beam for taller walls or clay (see the steel post sizing guide). Finish with caps, brackets & hardware and drainage — ag pipe, geo matting, or a drainage kit. See How to build a concrete sleeper retaining wall.
Water behind a wall is the number-one cause of failure — always plan drainage (drainage guide). Walls over 1.0m or near boundaries/driveways/pools generally need engineering and council approval (engineered walls over 1 metre).
Send your postcode and quantities for a freight quote, or contact the team.
What does the Ashwood finish look like?
A warm grey-brown timber-look tone — between charcoal and woodgrain, versatile across many home styles.
What sizes does it come in?
200mm high, in 80/100mm thicknesses and 1800/2000/2400mm lengths.
Is it maintenance-free?
Yes — no oiling or staining, and it won't rot, warp or attract termites like real timber.
Which posts do I need?
C-channel for low walls, H-beam for taller walls or clay — see the steel post range.
Do I need council approval?
Walls under ~1m are often exempt; taller, boundary or driveway walls usually need approval and engineering.
Can you deliver to me?
We deliver across most of Australia. Send your postcode and quantities for a freight estimate.
