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Gate Strikes and Stops

By metal gates austin digest

Two small pieces of metal decide whether a gate closes properly: the strike, which receives the latch, and the stop, which keeps the gate from swinging past where the latch expects it to be. They are cheap, easy to overlook and responsible for a surprising number of gates that bang, bounce or refuse to catch.

What a strike does

A strike, sometimes called a keeper or catch plate, is the fixed receiver mounted on the post or the opposite gate leaf. The latch tongue or bolt enters the strike and holds the gate shut. A well-made strike has a shaped opening that guides the latch into position as the gate arrives, even if the gate is slightly off-center. A poor one is just a hole or a bent strap, and any misalignment turns into a failure to latch.

What a stop does

A stop physically blocks the gate at the closed position. Without one, the gate's momentum, the wind or a push from a person can carry it past the strike, and then it either hits the latch from the wrong side or springs back open. A stop gives the gate a fixed place to rest, so the latch meets the strike the same way every time. On a driveway or pool gate where closing must be reliable, that consistency is the point.

Common types of strikes

• Flat plate strike: a metal plate with a slot or hole, bolted or welded to the post. Simple and widely used.
• Box strike: a small enclosed pocket that surrounds the latch tongue, giving extra guidance and preventing the tongue from slipping out sideways.
• Hook or loop strike: a bent bar or ring that receives a drop bar or a bolt. Common with gravity and slide latches.
• Adjustable strike: a plate with slotted holes or movable jaws, useful when a gate moves seasonally.
• Bolt-down receiver: a sleeve set into the ground or a rail to receive a drop pin on a double gate.

Common types of stops

• Angle iron stop: a short length of angle welded or bolted to the post so the gate rests against its face.
• Flat bar stop: a strip fixed behind the gate on the latch side. Often hidden and clean looking.
• Ground stop: a pin or bar set in the pavement that catches the bottom of the gate. Often used on double gates to hold the leaves at the meeting point.
• Rubber bumper: a cushioned block that softens contact and cuts noise.
• Post-mounted bolt stop: a bolt head or threaded rod that can be adjusted to fine tune the closed position.

Positioning a stop correctly

The stop belongs on the side of the gate facing the direction it swings from, so the gate closes against it. For an inward-opening gate, that means the stop sits on the inside of the post, and the gate stops against it when closed. The stop should hold the gate so that the latch tongue lines up with the middle of the strike opening, not at its edge.

Close the gate fully, mark where the gate edge touches the post and check the latch alignment. Fit the stop so that when the gate meets it, the latch bar or tongue sits precisely where it needs to be. A tiny gap, about the thickness of a coin, between the stop and the gate when the latch is engaged leaves room for expansion and lets the latch do its job without strain.

Stopping a gate that swings past

Overswing is the most common complaint. A gate that swings beyond the closed position hits the latch from the wrong angle, or bounces off the strike and drifts open. Adding a stop on the closing side cures it. The same applies at the open end. A gate that swings too far open can strike a wall, a vehicle or a hinge post, damaging the hinges. A second stop, such as a ground pin or a post-mounted bumper at the open position, protects the hardware and the surroundings.

Wind makes overswing worse, particularly on solid or tightly slatted gates that catch the breeze like sails. A sturdier stop, plus a holder that keeps the gate open in gusts, prevents damage.

Installing and securing the hardware

Use through bolts or welds, not short screws, since stops take repeated impact. On steel posts, drill and bolt with lock nuts or use a welder. On masonry or concrete posts, use anchors rated for steel. A loose stop moves a little with each impact, and the gate closes slightly differently each time, which brings back the original problem.

Check that the stop and strike do not interfere with each other. A stop positioned too close to the strike can block the latch, and a strike that sits proud of the post can prevent the gate from reaching the stop.

Fine tuning and maintenance

Slotted mounting holes allow small adjustments after installation. Make changes in tiny steps, test several times and tighten when the gate closes and latches cleanly. Look at both pieces every season. Strikes wear at the edges where the latch tongue slides in, and stops get dented or loosened by repeated impact. Replace a worn strike before the gate begins to miss it, and re-tighten stop bolts that have worked loose.

Paint both parts to resist rust, but keep paint out of slots and openings so the latch moves freely. A light wipe of lubricant on the strike's inside surface reduces wear and noise.

When double gates add complexity

Two-leaf gates have a meeting point where one leaf usually holds the other. A ground stop, a drop pin and a strike on the secondary leaf all work together here. The leaf with the latch should be the one that closes last, and the stop should align the leaves so the gap between them is even from top to bottom. Adjusting stops on both leaves, a little at a time, gives an even and secure closure.

Choosing materials that last outdoors

Strikes and stops live at the exact spots where gates collide with their posts, so they take repeated hits and trap water against the post. Heavy mild steel plate, galvanized or painted after fabrication, handles the impact. Thin stamped strikes bend and wear through at the slot within a few seasons. Stainless fasteners resist rust at the bolt heads, though where they touch steel they should be isolated with a coat of paint or a nylon washer to limit corrosion between unlike metals.

Edges matter. Rounding the lead-in edge of a strike with a file lets the latch tongue slide in smoothly and reduces wear, while a sharp edge catches and chips paint. Likewise, rounding the contact face of a stop spreads the impact over a wider area.

Noise and wear

A gate that clangs against its stop every time will eventually loosen the hardware and annoy everyone nearby. Rubber or polyurethane pads fixed to the stop face cushion the contact, and a thin strip of the same material on the strike slot quiets the latch tongue. Check the pads yearly, because sun and weather harden and crack them. Replacing a worn pad takes minutes and protects the steel behind it from denting.