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How to Fix Your Sagging Fence or Gate

close up of worker reattaching wood beams to repair a sagging fence

Fences that sag in the middle can be unsightly, unstable and downright dangerous.

Regardless of whether your fence is made of wood, vinyl or chain-link, it’s possible to repair it. Here’s what you should know before tackling your next fence repair project.

What Can Cause Fences to Sag

There are a few reasons why your fence might start to slump between posts, but most commonly, the problem is structural. You may have:

  • A broken fence post

  • A fence post that isn’t anchored deep enough in the ground

  • Tree growth that’s pushed part of the fence over

  • Fence rails that are loose

Additionally, any fence post that isn’t anchored in concrete could be problematic. Only a concrete “foot” can keep the post from bending or sinking down into the soil. In some cases, posts can be set in gravel rather than concrete. But this will only work well in clay soil that won’t compact or shift. Nonetheless, concrete provides the most secure anchor and is well worth the investment.

How To Repair A Sagging Fence

To repair your sagging fence, you’ll most likely need to focus on the fence posts. Here are the steps you’ll need to follow in order to fix them.

  1. Put up a brace. The first thing you need to do is prop up the existing fence with a 2x4 piece of lumber to keep it from crashing down during the repair. Jam the lumber between the fence and ground, making sure not to scratch your fence.

  2. Loosen the rails. Remove or cut the nails or screws attaching your fence rails to the post.

  3. Take out the old post. Break up the concrete at the base, remove the post and clean out the old concrete.

  4. Put in the new post. Your hole should be at least 450 mm deep. Once it’s been dug, insert your new post in it, using a four-foot level to make sure it sits evenly.

  5. Fasten on the rails. Once your post is level and where you want it to be, fasten it to the rails with screws and pour new concrete into the hole. Keep in mind that the concrete requires 24 hours to set.

  6. Remove the brace. Once the concrete has completely dried, you can remove the brace you put up the day before.

If you follow these steps, your fence should stand straight and tall once again.

Call Duraguard for Fencing Repairs and Materials in Alberta

No tools? No time? Too much trouble? The fence experts at Duraguard Fence Ltd. can repair your fence in no time. In addition to providing fencing products, we offer prompt efficient fence repairs and maintenance to our residential, commercial and industrial clients in Edmonton, Bonnyville, Grande Prairie, Fort McMurray, Red Deer and surrounding communities. Contact us today to book your fence repair or get a free quote.


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