A sagging gate that drags on the ground or no longer lines up with the latch is almost always caused by one of three things: loose or undersized hinges, a gate frame that has racked out of square, or a leaning gate post. The fix depends on the cause — tighten or upgrade the hinges, pull the frame back square with an anti-sag turnbuckle kit, or reset the post. Start by finding which one is actually failing, because throwing new hinges at a leaning post will not fix it.
What you'll need
- A drill/driver
- A screwdriver
- A tape measure
- A level
- A wrench or pliers
- A helper or a block to hold the gate up
Recommended parts & supplies
- Heavy-duty gate hinges — upgrade if the originals are bent or undersized
- Gate latch hardware — replace a rusted or misaligned latch
- Anti-sag gate kit (turnbuckle and cable) — pulls a racked frame back into square
- Exterior deck screws / lag screws — longer screws bite into solid wood for hinges
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Step by step
- 1
Diagnose where the sag is coming from
Close the gate and look at the gap. If the gate droops on the latch side, the frame or hinges are giving. Push on the hinge post — if it rocks or leans, the post is the real problem and needs resetting first. Check the hinge screws: if they spin freely or have pulled out of soft wood, the hinges are the culprit. Diagnose before you buy anything.
- 2
Tighten or upgrade the hinges
If the hinge screws are loose, try longer exterior screws or lag screws that reach into solid wood, or move the hinge slightly to fresh wood. If the hinges themselves are bent, rusted, or too small for the gate weight, replace them with heavier galvanized hinges. Make sure the top hinge in particular is solid, since it carries most of the load.
- 3
Reset the hinge post if it is leaning
A gate is heavy and constantly swinging, so its hinge post leans before any other post. If yours is leaning, stop and reset it plumb in fresh concrete first — no amount of gate adjustment fixes a post that is falling over. A gate hung on a solid, plumb post is half the battle.
- 4
Square a racked frame with an anti-sag kit
If the post and hinges are solid but the wooden gate frame has sagged into a parallelogram, install an anti-sag kit. Run the cable diagonally from the top corner on the hinge side down to the bottom corner on the latch side, then tighten the turnbuckle. As you crank it, the cable pulls the drooping latch corner back up and squares the frame. Snug it until the gate is level and the drag disappears.
- 5
Realign or replace the latch
Once the gate hangs square, the latch may still not line up. Loosen the latch and strike, reposition them so they meet cleanly, and re-screw. If the latch is rusted or bent from being forced, swap in fresh gate latch hardware. Test that it closes and catches without lifting the gate.
- 6
Test the swing and add a gate wheel if needed
Swing the gate through its full arc and confirm it clears the ground and latches on its own. For a heavy or wide gate that still wants to sag over time, a small gate wheel on the latch-side bottom corner carries the weight and stops it from dragging as the seasons shift the soil.
When to call a pro
Most sagging gates are a satisfying afternoon fix. Call a pro if the gate post keeps leaning no matter how you reset it (a sign of deeper soil or drainage problems), if the gate is a large, heavy double-drive or automated gate, or if the frame itself is rotted and needs rebuilding rather than squaring. Metal and automated gate hardware in particular can involve welding or electrical work that is safer left to a specialist. If the sag is one symptom among many failing posts along the fence, get a broader repair-versus-replace look.
Get a free quote from a local pro
No obligation — a licensed, insured local Houston partner will reach out. Available 24/7 for emergencies.
How to Fix a Sagging Fence Gate That Drags or Will Not Latch — FAQ
Why does my fence gate sag over time?
What is an anti-sag gate kit and does it work?
Which way does the anti-sag cable go on a gate?
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