Scope
This guide covers hanging a manual swing gate, such as a walk-through gate in a backyard fence or a modest garden or side gate. Heavy driveway gates, sliding gates and anything powered have extra requirements, and automatic gates in particular should be installed by qualified professionals. Always follow the instructions that come with your gate and hardware, as they take priority over general advice.
Step 1: Check the gate and the opening
Measure the gate and the opening before anything else. The opening should be wider than the gate by enough to allow for the hinge clearance and the latch gap. The exact allowance depends on your hardware, so read its instructions. Check that the gate is square, because a gate built even slightly out of square will never hang right. Measure the diagonals, and if they differ, correct the frame first.
Decide the swing direction. Gates usually open toward the side that gives the most clearance, or toward the inside of the property for security. Check for slopes, steps, planters or other obstacles in the path of the swing. Local rules sometimes limit whether a gate can swing out over a sidewalk.
Step 2: Get the posts right
A gate is only as good as the posts that carry it. The hinge post bears the weight and constant leverage, and a post that leans or flexes will let the gate sag. Gate posts are typically larger and set deeper than line posts, and their footings should be fully cured before you hang anything. Our notes on post depth and post footings explain the principles.
Check both posts for plumb in two directions. If the opening width at the top differs from the bottom, the gate will bind. If the posts are not right, fix them now. Shimming a bad post is a short-term fix at best.
Step 3: Choose and place the hinges
Hinge choice depends on the gate’s weight and material. Our guide to gate hinge types describes strap, T-hinge, butt and other designs. Heavy gates need heavier hardware and sometimes a third hinge. Use hardware suited to the weather, since rust is a frequent cause of failure, and corrosion-resistant hardware matters most in damp or coastal climates.
Support the gate in the opening with blocks or shims so it sits at its intended height, with an even gap along the latch side and the bottom. Hold it there and mark the hinge positions. A common approach is to place the hinges a modest distance in from the top and bottom of the gate, but follow the recommended spacing for yours.
Fix the hinges through solid wood or metal and avoid trim or thin boards that will not hold screws. Use the fasteners supplied or those recommended for the hinge, and predrill to avoid splitting.
Step 4: Hang the gate
Attach the hinges to the gate first, then to the post, while the gate is still supported on its blocks. Take your time, because this is the step where an assistant is most useful. Remove the blocks slowly and see how the gate sits. It should hang plumb, with the top and bottom gaps consistent along its length.
Swing the gate through its full arc. It should move freely without scraping the ground or catching on the post. If it rubs, note where, and look at whether the posts, the hinges or the gate itself are at fault.
Step 5: Fit the latch and the catch
Latch height is a balance between convenience and safety. For a gate that opens onto a play area or pool, child-resistant latches placed high and out of reach are often required or recommended, and rules can apply. For a general latch, the comparison of gate latch types shows the main options.
Mount the latch on the gate, close the gate against its stop, and position the catch or receiver so the latch engages without force. Fixing a stop on the post keeps the gate from swinging past closed and loading the latch. Test the latch several times and from both sides if it is meant to be used from both.
Step 6: Level and adjust
With the gate hanging, check it with a level and look at the gaps. Small corrections are usually made by adjusting hinge screws, shimming a hinge, or adjusting the catch position. Resist the urge to force alignment with the latch. If the gate sags toward the latch side, a diagonal brace running from the bottom hinge side up to the top latch side helps a wood gate resist it. Our piece on gate bracing explains more.
If you find yourself making repeated big adjustments, step back. The problem is probably the post.
Step 7: Final checks
Open and close the gate a dozen times. Check that it stays where you leave it, instead of swinging on its own, unless it is designed to self-close. If it is self-closing, the self-closing hinges article covers the springs, and make sure it closes fully and gently. Tighten all fasteners, and recheck after the first week and the first season, as new posts settle and wood shifts. Lubricate moving parts if the manufacturer recommends it.