Concrete under fence plinths are precast concrete panels installed at the base of Colorbond and timber fencing to prevent direct soil contact — the leading cause of fence base rot and premature fence failure across Perth's reactive clay eastern suburbs. On Perth's sandy coastal strip, plinths provide a clean, finished look at the base of fencing on retaining walls. On the reactive Guildford Clay soils of Midland, Armadale, Gosnells, and Kelmscott, they are a structural necessity — preventing seasonal soil movement from lifting, cracking, or destabilising the fence base through Perth's wet winters and dry summers.
Our precast concrete plinths are manufactured to the same high-strength specification as our concrete sleepers, with a consistent surface finish and clean edges that create a professional, integrated look between the retaining wall and fence above. Compatible with all standard Colorbond fence post spacings and timber paling fence systems used across Perth.
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