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Small Path

Small Slabs

Garden edging

OneMix Rapid Set

Our OneMix Rapid Set is our fastest drying formula, made from a special blend of cement, aggregate, sand and additives designed to rapidly harden without any mixing. This quick-setting product is best suited to small jobs that require little preparation, such as setting fence posts, clothes lines and letter boxes.

Why you need this product:

  • –  Fast-setting formula perfect for quick jobs
  • –  No mixing required
  • –  Add clean water and the product will harden in 15 minutes
  • –  Compressive strength of 25MPa* when fully cured
  • Benefits of OneMix’s Weatherproof Packaging:

  • –  OneMix bags can be stored outside, unopened, in all seasons
  • –  The packaging can prevent leakage of product and any excess dust
  • –  Provides improved shock and tear resistance, which can reducing wasted product

Product Availability

  • 20kg bags
  • 20kg product now comes standard at 84 bags per pallet (1.68 tonnes).
  • Custom pallet sizes are available where required. Please contact the OneMix team for further information regarding product quantities.
  • 30kg bags
    30kg bags of HS-60 are unavailable at this point in time.

If you don’t require a quick set for your job, please find more information on our OneMix Post Mix.

* MPa is the metric unit for pressure or stress, a megapascal (MPa). The term is a common unit for compressive strength in concrete.

How to build a fence using OneMix Rapid Set

OneMix presents an easy, step-by-step guide on how to use OneMix Rapid Set when building a fence.


Post Hole Dimensions


Post Type


Results (Approximate)

Volume of concrete =
No. Bags Required
Volume of Water per bag