Reading a Sagging Leaf

One leaf hanging lower than it should is a symptom with four quite different causes, and the wrong repair is easy to reach for. The order of elimination used at Gate Maintenance Mount Pleasant, SC thetaxpayers starts at the ground rather than at the hardware, since a Mount Pleasant gate footing in sandy soil moves more often than a hinge wears out.

Is the Post Still Plumb

Put a level on the hinge post in both directions. A post leaning toward the opening drops the far edge of the leaf by several times the lean at the top, which is why a barely visible tilt reads as a badly sagging gate. On sandy coastal ground with a shallow footing, this is the most common cause by a wide margin.

Has the Frame Racked

Measure both diagonals of the leaf. A square frame gives equal numbers. A difference means the welded corners have opened up and the gate is now a parallelogram, usually after somebody swung on it or a vehicle caught it. Adjusting the hinge will not fix a racked frame, and adding a diagonal brace to a leaf that never had one is the durable answer.

Is the Hinge Worn

Support the leaf, take the weight off, and look for movement at the pin. Wear at the top hinge is the classic cause on a heavy ornamental gate, because that one carries the leaf in tension while the bottom one works in compression. This is real but it is the third thing to check, not the first.

Has a Fixing Moved

Check whether the hinge strap is still tight against the post, whether bolts have elongated their holes, and whether a welded strap has cracked at its toe. A fixing that has moved a quarter of an inch at the post shows up as an inch or more at the latch and looks exactly like hinge wear from a distance.

Adjust Last

Only after those four are settled does adjustment make sense, and then it is done to restore the design geometry rather than to chase the latch. A gate that has been adjusted twice without anybody measuring anything is a gate that will need adjusting a third time.