How to Fix a Sagging Fence Gate

Gravity is the natural enemy of any gate, especially those made of wood. Over time, the weight of the gate pulls down on the side farthest from the hinges, causing the frame to skew and the latch to misalign. A sagging gate isn't just an eyesore; it puts unnecessary strain on your post and hardware, eventually causing the entire assembly to fail. Fixing this is a matter of geometry, not force. By bracing the frame correctly and redistributing the weight, you can restore the gate to its original square shape. A well-adjusted gate should swing smoothly without dragging on the ground or catching on the strike plate, giving you years of reliable access to your yard.

1. Tighten All Hinge Fasteners. Inspect all screws holding the hinges to the gate and the post. Tighten any loose screws, and replace those that have stripped the wood with longer, heavy-duty exterior-grade screws.
2. Remove Dragging Obstacles. Open the gate and remove any debris or tall grass from the area where the gate drags. If the gate still hits the ground, use a block plane or circular saw to shave a small amount off the bottom edge.
3. Install Anti-Sag Bracing. Mount the eye-bolts at the top corner of the hinge side and the bottom corner of the latch side. Thread your steel cable or turnbuckle assembly between these two points.
4. Dial In Perfect Alignment. Use a wrench to tighten the turnbuckle until the gate begins to lift slightly upward. Watch the gap at the latch side and stop tightening once the gate is perfectly square and level.
5. Brace Frame Joints Permanently. Add heavy-duty corner braces or mending plates to the frame joints to prevent further shifting. Drill pilot holes to avoid splitting the wood when driving the screws.
6. Finish With Smooth Operation. Apply a silicone-based lubricant to the hinges to ensure smooth operation. Swing the gate open and closed several times to ensure it latches properly without resistance.