How do I reinforce loose fence posts?

Updated February 21, 2017

A do-it-yourselfer can handle a loose fence post. Extreme weather conditions, age, improper installation or accidents can threaten the structural integrity of a post. . Repairing a post is necessary to keep the entire fence from falling and the area around the fence safe. Often, fence posts loosen because they are not set in concrete. Reinforcing fence posts is a job a do-it-yourselfer can accomplish successfully in a few steps with the proper supplies.

Place 2-by-4s at a 45-degree angle from the ground to the fence post on two sides of the post to add support while inspecting or permanently reinforcing them.

Dig a hole around the fence post, extending 6 inches past the post in all directions and 1-inch deeper than the bottom of the post.

Inspect the fence post for signs of damage such as wood rot, termites or breakage. If extensive damage exists, replace the fence post by detaching the post from the fence and attaching a new post.

Chip away existing concrete from the bottom of the fence post with a cold chisel and hammer.

Remove old chipped-off concrete from the fence post hole.

Mix concrete in a wheelbarrow, trough or bucket according to the directions on the package.

Pour concrete into the hole, around the fence post and up to ground level.

Place a level on the fence post to check for level and plumb. If the bubble on the level is not on centre, adjust the fence post in the appropriate direction, tap down or move up until the bubble centres. Wedge another 2-by-4 from the ground to the fence post to hold it in place.

Allow the concrete to set for 6 to 8 hours before removing fence post supports.


Plumb is levelling a surface vertically. Check fence posts for structural integrity yearly. Address termite damage with an exterminator.

Things You'll Need

  • 2-by-4s
  • Shovel
  • Cold chisel
  • Hammer
  • Wheelbarrow, trough or bucket
  • Ready-mix concrete
  • Level
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About the Author

Sal Marco began writing professionally in 2009. He has written many online home improvement articles based on his more than 20 years of experience in the home improvement and building industries. He has worked as both part of a team and as a site supervisor. Marco has a Bachelor of Science in management science from Kean University.