PostFix Rapid Set Concrete is designed for fast, reliable installation of fence posts, retaining wall uprights, pergola posts, clotheslines and similar small construction jobs where speed and stability matter.

This convenient pre-bagged mix removes the need for on-site batching. Simply pour the material into the post hole and add water for a quick and dependable set.

Suitable for both DIY projects and professional installations, PostFix helps keep jobs moving without compromising strength where it counts.

Benefits of PostFix Rapid Set Concrete

Fast setting performance

Begins setting in around 10 minutes so you can continue work sooner.

Simple application

No mixing required — pour directly into the hole and add water.

Reliable support

Balanced blend of cement and aggregate designed for strong post stability.

Versatile use

Ideal for fencing, retaining wall uprights, garden structures and general post installations.

Application Options

Dry-set method (fastest option)

Pour the dry mix around the positioned post and add water directly into the hole for quick installation.

Wet-mix method (maximum strength)

Pre-mix with water before placement when higher compressive strength is preferred.

Features of This Concrete Mix

• Convenient 20kg bag size

• Rapid setting formula

• Suitable for timber, steel and aluminium posts

• Designed for small-scale structural support applications

• Quality blend of cement, sand, aggregate and additives for consistent results