How to set a wood fence post using dry ready-mix concrete

Written by keith dooley
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How to set a wood fence post using dry ready-mix concrete
Secure wood fence posts with dry ready-mix concrete (fence post image by Warren Rosenberg from

Wood fence posts are commonly used to support a variety of fencing materials including wood, wire and plastic. Serving to fence small and large animals alike, wood fence posts are available in different sizes including the commonly used 4-by-4-inch square size. Installing a fence post securely is necessary so that the end result is a durable and long lasting fence. Securing wood fence posts with dry ready-mix concrete is a convenient method of installation.

Skill level:

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Things you need

  • 4-by-4-inch wood fence post
  • Post hole diggers
  • Shovel
  • Gravel
  • Level
  • Dry ready-mix concrete
  • Water

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  1. 1

    Dig a hole in the ground using post hole diggers. Form the hole so that the depth is one-third the length of the 4-by-4-inch square post. For example, if the post is 8 feet long, the hole should be about 2 1/2 feet deep with an extra 6 inches added for gravel placement in the bottom. Form the hole with the diggers so it is at least 1 foot across.

  2. 2

    Place gravel in the bottom of the hole and pack it down firmly with a tamp or handle of a shovel. Place the 4-by-4 wooden post in the centre of the hole. Pour a few inches of gravel around the post and tamp it down to secure the post upright. Use a level to straighten the post as needed.

  3. 3

    Pour dry ready-mix concrete around the wooden post and fill the hole to within 4 inches or so of ground level. Even the concrete mix around the hole, if necessary, with a shovel or by hand.

  4. 4

    Add water to the dry ready-mix concrete as directed by the manufacturer. As a rule of thumb, enough water needs to be added to the mix so it is thoroughly moistened without becoming thin or runny.

  5. 5

    Allow the ready-mix concrete to cure and harden overnight for at least 10 to 12 hours.

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