How to Fix a Broken Fence Gate – Complete Guide

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8 min read|Updated: Jun 27, 2026|By Home Repair Expert

Quick Answer

A sagging fence gate is fixed with an anti-sag kit (cable and turnbuckle) installed diagonally from the top hinge corner to the bottom latch corner. Tighten the turnbuckle until the gate pulls square and the latch aligns. For a hinge-side failure, replace any worn hinges with heavy-duty alternatives. Most fence gate repairs take 30-60 minutes.

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A broken fence gate that sags, drags on the ground, will not latch, or hangs crooked is a daily frustration and leaves your garden less secure. Fortunately, most gate problems come down to the hinges, the latch, or a sagging frame, and you can usually fix them yourself in an afternoon with basic tools.

This guide walks through the most common fence gate problems and how to fix each one, from re-securing dropped hinges and curing sag to realigning a stubborn latch, for a gate that swings and closes properly again.

Why Fence Gates Sag and Stick

Gates take constant use, weather, and their own weight, so they develop predictable faults:

• Loose or worn hinges: Screws work loose or hinges wear, letting the gate drop so it drags and will not latch.
• A sagging frame: The gate frame racks out of square over time, so the latch edge droops, a very common problem.
• A misaligned latch: Once the gate drops or the post shifts, the latch no longer lines up with its catch.
• A leaning gate post: A loose or rotted post lets the whole gate tilt and bind.

Tools and Materials You Will Need

• Screwdriver and drill
• Longer screws or coach screws
• Anti-sag gate kit (turnbuckle brace)
• Spirit level
• Replacement hinges or latch (if needed)
• Wood preservative
• Adjustable spanner
• Wood glue

Step-by-Step: How to Fix a Fence Gate

Step 1: Tighten or Upgrade the Hinges

Start by tightening all the hinge screws. If the screws spin or the gate is heavy, replace them with longer screws or coach screws that bite deeper into the post and frame for a much stronger hold.

Step 2: Check the Post Is Solid

Push the gate and watch the post. If the post itself rocks or leans, the gate will never sit right, so re-secure or reset the post (in fresh postcrete if it is loose or rotted) before adjusting the gate.

Step 3: Cure the Sag With a Brace

If the gate has dropped at the latch edge, fit an anti-sag kit, a diagonal cable and turnbuckle running from the top hinge corner to the bottom latch corner. Tighten the turnbuckle to pull the gate back square.

Step 4: Realign the Latch

With the gate hanging level again, check the latch. Reposition the catch on the post so it lines up with the latch, marking and re-screwing it at the correct height.

Step 5: Test and Protect

Swing the gate to confirm it opens, closes, and latches smoothly. Treat any bare or new timber with wood preservative to protect it from the weather.

Pro Tips to Prevent This Problem

• Fit an anti-sag turnbuckle brace, it is the most effective cure for a drooping gate and easy to install.
• Use coach screws or longer screws on hinges, as standard short screws often pull loose on heavy gates.
• Make sure the gate post is solid first, since a loose post undermines every other adjustment.

When to Call a Professional

Call a professional if the gate post needs fully replacing and resetting, if a large or heavy gate has failed, or if the gate is part of automated or security gating. Resetting posts and rehanging heavy gates can be demanding work that is faster and more durable with an experienced pair of hands.

Frequently Asked Questions

How do I fix a sagging fence gate?

The best fix is an anti-sag kit, a diagonal cable and turnbuckle from the top hinge corner to the bottom latch corner. Tightening it pulls the gate back square so it no longer droops at the latch edge.

Why will my gate not latch anymore?

Usually the gate has dropped or the post has shifted, so the latch no longer lines up. Cure any sag first, then reposition the catch on the post to match the latch height.

Why do my gate hinge screws keep coming loose?

Standard short screws often cannot hold a heavy gate. Replace them with longer screws or coach screws that bite deeper into the post and frame for a far more secure fixing.

Final Thoughts

A broken fence gate is usually fixable in an afternoon once you tackle the cause. Make sure the post is solid, tighten or upgrade the hinges, cure any sag with a turnbuckle brace, and realign the latch. Treat any bare timber to protect it, and your gate will swing true and latch cleanly again, keeping your garden secure with only major post resets left to a professional.