How to install a post

Easy Mix produces a range of concrete products designed to make post-installation simple. Whether you are installing a post letterbox or fence, you need to get the job done in a day or are looking for something that can withstand a bit of extra strength, we have the solution for you.

With an initial set time of 15 minutes, Easy Mix Rapid Set Concrete is the fastest way to set posts in position. Alternatively, if you’re working on a job where higher strength is required, Easy Mix Quick Set Concrete is the perfect product and is ideal for fence corners and large structural posts.

There are two different methods of using our Easy Mix Rapid Set Concrete – the dry method and the wet method – and both are outlined below.

Otherwise, scroll to watch the video which takes you through each step.

Before You Start

It’s time to calculate the size of the hole you will need.

Width = Twice the width of the post
Depth = 1/3 of the post height + 100mm minimum for concrete base

Rapid Set Concrete Coverage:

  • 1 x 20kg bag = 0.01m3
  • 100 x 20kg bags = 1.0m3

One bag fills: 400mm deep hole | 100 x 100 post | 75 x 75mm post

What You Will Need

  • Easy Mix Rapid Set Concrete
  • Spade or long-handled shovel
  • Crowbar or post hole auger
  • Spirit level or plumb line
  • Tape measure
  • Bracing and clamps to hold the post steady

Dry Method Instructions: 

1. Prepare the hole

Prepare your hole which should be twice the diameter of the post and one-third of the post depth.

2. Wet the hole

Thoroughly wet hole. Avoid ‘pooling’ of water at the base. Add 100mm of Rapid Set Concrete to base of hole before
placing post.

3. Place post into the hole

Insert post into hole.  If needed, use clamps and timber to brace posts in position, making sure they are level. Use a plumb line or level to check.

4. Add concrete to the hole

Add the required amount of concrete into the hole around the post. Do not mix. Check that the post is still level. 

5. Pour water on top

Pour water on top of the concrete (approximately 2 litres for each 20kg bag).

6. Tamp the mix

Immediately tamp the mix to make sure the concrete is consolidated and firmly packed.

Note: For best strength and fastest curing, do not touch or move the Rapid Set mixture after placement. Allow curing for a minimum of two hours before continuing to the next construction stage.

Wet Method (best for structural projects)

1. Mix concrete with water

On a mixing board or wheelbarrow, slowly add approximately 2.5 litres of water to the contents of one 20kg bag. A stiff, drier mix is best.

2. Place mixture into the hole

Place the wet mixture into the hole around the post. Tamp the mix to make sure the concrete is consolidated.

Temperature

Warm and/or humid environments will reduce the working time of this product. In adverse hot weather conditions, keep the material cool and use cold or chilled water when mixing. This product should not be used in ambient temperatures below 7 degrees Celsius.

Products that you will need

Downloads

Video tutorial

How to install a post

Easy Mix produces a range of concrete products designed to make post-installation simple. Whether you are installing a post letterbox…