Retaining Walls Direct delivers concrete sleepers, galvanised steel H-beam and C-channel posts, drainage kits and retaining wall accessories to Gladstone, Tannum Sands, Boyne Island, Calliope, Kin Kora and surrounding areas across the Gladstone LGA. We supply residential homeowners, landscapers, builders and civil contractors throughout Central Queensland.
Gladstone is a major industrial port city on Queensland's central coast. The region experiences a subtropical climate with a pronounced wet season and periodic cyclonic events. The area's proximity to the coast means salt-laden air can accelerate corrosion of unprotected steel — hot-dip galvanised posts to AS 4680 are essential. Hilly terrain throughout Gladstone's suburbs means retaining walls are common features of residential and commercial properties.
Important: Council approval and engineering requirements vary by wall height, soil conditions and location. Always check with Gladstone Regional Council or engage a licensed engineer before starting. Retaining Walls Direct is a materials supplier only.
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We dispatch via crane truck (Hiab) or flatbed. Delivery cost depends on order volume, suburb and site access. Contact us for a freight quote →
Soils in Gladstone vary from coastal sandy soils near Tannum Sands and Boyne Island (lower bearing capacity, good drainage) to heavier clay soils in elevated inland suburbs (reactive, poor drainage). On clay soils, post spacing should be reduced to 1.5m and drainage must be correctly installed to prevent hydrostatic pressure build-up. Sloped sites are common and may require engineering assessment.
Under Queensland's Building Act 1975, retaining walls over 1.0m require a building permit and a QBCC-licensed contractor. Walls near boundaries, easements or structures with surcharge loads may need approval regardless of height. Contact Gladstone Regional Council for your specific requirements. QBCC: qbcc.qld.gov.au
Every retaining wall must include 20mm drainage aggregate for the full retained height, slotted ag-drain pipe at the base directed to a legal outlet, geotextile fabric (min 140gsm) between backfill and drainage aggregate, and weep holes at 1.8m centres. In coastal locations, ensure drainage outlets remain clear of sand or debris build-up after storms. Browse drainage products →
Walls over 1.0m require a building permit from Gladstone Regional Council under Queensland law. Walls near boundaries or with surcharge loads (driveways, structures) may require approval at any height. Always check with council first.
All steel posts must be hot-dip galvanised to AS 4680. In coastal areas with salt-laden air, ensure the galvanising is intact and the post base is adequately protected during installation. Browse steel posts →
Yes — we deliver across the Gladstone LGA including rural and peri-urban properties. Access requirements affect delivery method and cost. Contact us to discuss your site.
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✓ AS 4678-2002 Certified Materials | ✓ Hot-Dip Galvanised Steel | ✓ Trade Accounts Available | ✓ ABN 98 351 143 900
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