AS 4678 Certified | Trade Accounts Welcome | 40+ Years Experience

AS 4678 Certified | Trade Accounts Welcome | 40+ Years Experience

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Dy-Mark Spot Marking Paint 350g
Geo matting geotextile fabric roll for retaining wall drainage
Geo Matting | Geotextile Fabric for Retaining Wall Drainage
Ag pipe 100mm x 20m slotted drain coil for retaining wall drainage
Ag Pipe 100mm x 20m | Slotted & Socked Drain Coil
Galvanised steel post caps for H-beam and C-channel retaining wall posts
Galvanised Steel Post Caps
Galvanised steel fence bracket kit with hex bolts and nuts for retaining wall posts
Galvanised Steel Fence Bracket Kit
Builders line nylon pink 100m stringline reel
Builders Line Nylon Pink 100m

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Retaining Wall Advice

CCA vs ACQ vs H4: Treated Pine Sleeper Treatments Explained

CCA vs ACQ vs H4: Treated Pine Sleeper Treatments Explained

H4, CCA, ACQ — the labels on treated pine sound technical, but only one thing actually matters for a retaining wall: is it rated for in-ground use.

  • July 10, 2026
  • 11 min read

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