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Blackwood Concrete Under-Fence Plinth 50mm | Retaining Walls Direct

Blackwood Concrete Under-Fence Plinth — 50mm

The Blackwood concrete under-fence plinth delivers the same structural protection as our standard plinth range in a deep, dark Blackwood finish — ideal for contemporary homes with dark Colorbond fencing, black steel posts, and dark-palette garden designs. Elevates the fence base off reactive clay ground, eliminates moisture wicking into timber, and prevents ground movement from cracking and lifting fence bases.

With 40+ years of hands-on experience building retaining walls and associated structures across Australia, we supply Blackwood plinths to homeowners and builders who want a coordinated, premium look across their retaining wall and fencing system. The Blackwood finish matches our Blackwood concrete sleeper range.

Specifications

  • Thickness: 50mm
  • Finish: Blackwood dark
  • Application: Under Colorbond steel fencing and timber paling fences on reactive clay sites

Why Use Concrete Plinths?

  • Eliminates fence rot at ground level — the most common cause of premature fence failure in Australia
  • Prevents reactive clay ground movement from cracking and lifting fence bases
  • Particularly important on reactive clay sites in Western Sydney, Melbourne's east, Brisbane's west, Adelaide's plains, and Perth's eastern suburbs
  • Extends fence lifespan significantly, reducing long-term replacement costs

Delivery

Delivered across Sydney, Melbourne, Brisbane, Perth, Adelaide, Canberra, Gold Coast, and regional Australia. Get a free quote.

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