H4 CCA treated pine 100mm heavy duty timber sleepers are the structural timber option for retaining walls up to 1.0m in well-drained conditions. The additional 100mm thickness provides greater section depth and bending resistance compared to 75mm sleepers, making them suitable for slightly higher walls where a timber aesthetic is preferred and budget is the primary constraint.
With 40+ years of hands-on retaining wall experience across Australia, we supply treated pine sleepers alongside our concrete range. For any wall where longevity, structural performance, and low maintenance are priorities, we recommend our concrete sleeper range instead. See our comparison: Concrete vs Timber Sleepers — Which Should You Choose?
Delivered across Sydney, Melbourne, Brisbane, Perth, Adelaide, Canberra, Gold Coast, and regional Australia. Get a free quote.
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