Got a question about retaining walls, our products, or your project? We've answered the most common ones below. If you can't find what you're looking for, contact our team directly.
For most residential retaining walls up to 1.2m in finished height, our 200x75mm concrete sleepers are the standard choice. For taller walls, walls with surcharge loads (driveways, structures above), or reactive clay soils, use our 200x100mm heavy duty sleepers. See our full guide: 75mm vs 100mm Concrete Sleepers.
C-Channel PFC posts suit standard residential walls up to ~1.2m. H-Beam UC posts are required for taller walls, surcharge loads, or reactive soils. Read our full comparison: H-Beam vs C-Channel Steel Posts.
All our concrete sleepers are 2000mm (2.0m) long and 200mm wide, available in 75mm and 100mm thickness.
We stock Charcoal, Woodgrain, and Smooth Finish concrete sleepers. Charcoal is our most popular finish for contemporary landscaping. Woodgrain suits traditional or bush settings. Smooth Finish is ideal for painting or rendering.
Yes. Our concrete sleepers comply with AS 3600 and AS 1379, with minimum 32MPa compressive strength. Steel posts comply with AS/NZS 3678 and AS 4100. See our Certifications page for full details.
As a general rule, embed posts to at least one-third of the total wall height below ground, with a minimum of 600mm for any wall. Taller walls or reactive soils may require deeper embedment — consult an engineer for walls over 1.2m. See our post embedment guide for full details.
Standard post spacing is 1.8m–2.0m centres for residential walls. Reduce spacing for taller walls, heavier loads, or poor soil conditions. See our post spacing guide.
Yes — always. Poor drainage is the number one cause of retaining wall failure. Install ag pipe, drainage gravel, and weep holes behind every wall. See our drainage guide and drainage kits.
Yes, for walls under 1m on accessible, stable sites. Concrete sleepers are heavy (~90kg each for 75mm) so you'll need at least two people. For walls over 1m, near boundaries, or on reactive soils, we recommend a licensed contractor. Find one through our Partner Installers directory.
It depends on your state and wall height. Generally, walls under 600mm don't require approval; walls over 1m almost always do. See our state-by-state regulations guide and Engineering & Council Rules for full details.
An engineer's certificate is typically required for walls over 1m, walls near boundaries or structures, walls on reactive soils, or walls supporting surcharge loads. See our guide on how to get council approval.
Yes. We deliver concrete sleepers and steel posts to NSW, QLD, VIC, SA, WA, TAS, and ACT. Delivery costs and lead times vary by location. Request a quote for delivered pricing to your postcode.
The easiest way is to book a free quote with our team. We'll calculate quantities, recommend the right products, and provide delivered pricing for your location — at no cost. Or use our cost calculator for a quick estimate.
Yes. Volume discounts are available for landscapers, builders, developers, and large projects. See our Bulk & Trade Pricing page or apply for a Trade Account.
Contact our team — we're happy to help with product selection, installation advice, or anything else about your project.
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