Wooden Gate Locks vs Latches: What’s the Difference and Which Do You Need?

A latch holds a wooden gate shut, while a lock controls who can open it—many gate latches combine both, but only some lock with a key.

For the full breakdown, see our best Wooden Gate Lock guide.

The two words get used interchangeably at the hardware aisle, and that confusion is expensive: you can walk out with a latch that keeps a gate from swinging in the wind and still leaves it open to anyone who lifts the bar. Knowing which job you’re actually hiring hardware for—staying shut or staying shut to strangers—is the whole decision.

Here’s the short version. A latch is the mechanical catch that keeps the gate closed and aligns it with the post. A lock is the part that stops someone from operating that catch. Plenty of products do both, which is why the labels blur. Read what the unit actually does before you buy, not what the box calls it.

What Does A Gate Latch Actually Do?

A latch’s job is closure and alignment—it holds the gate against the post and releases when you lift, pull, or turn it. It is not, by itself, a security device. Gravity latches drop a bar into a catch and self-close on their own. Spring latches snap shut behind you. Manual thumb latches need a hand to operate. None of these stop a determined visitor, because the release is right there on the outside for anyone to reach.

That’s fine for most backyard gates. If your goal is keeping the dog in, the wind from banging the gate, and a clear boundary line, a plain latch is the honest answer. Where it stops being enough is the moment the gate separates your yard from a street, an alley, or a pool area.

When Do You Need An Actual Lock?

A lock is required whenever the gate has to keep someone out, not just hold itself closed—and that means a key, a padlock, a combination, or an electronic credential in the chain of operation. The difference matters most around pools and anywhere a child could reach the hardware, where a general-purpose latch is not a substitute for hardware designed for child safety.

Some products split the difference. The Max wood-gate hardware line from Ameristar Perimeter describes a heavy-duty post latch that is self-latching, reversible for left- or right-handed gates, and lockable from both sides, accepting a padlock on either face. That’s a latch body doing lock duty—convenient at the gate, but it still depends on you actually hanging a padlock on it.

Watch the wording on big-box labels. Review the mechanism before you assume keyed access.

Latch Or Lockable Latch: Match The Hardware To The Gate

Fit decides more installs than security level does—material, post shape, gate thickness, swing direction, and clearance all have to line up before a latch will engage cleanly. Assa Abloy’s gate hardware range mounts to steel, aluminum, wood, and vinyl gates, fits square-posted gates, adapts for left- or right-swinging gates, and offers vertical and horizontal adjustment for alignment.

That adjustability earns its keep on wood, which swells and shrinks with the seasons. A latch that fits in April can miss the striker by August. Adjustable hardware buys you correction; it does not fix a sagging post or a gate that has dropped on its hinges. If the gate frame is out of square, no latch on the shelf will hold it true.

Installation follows the same shape on most units. Lowe’s wood-fence guidance recommends following the latch maker’s instructions and gives the typical sequence: drill through the mounting holes, secure the latch body to the post with the supplied lag bolts or screws, then align the gate arm so the latch opens and closes correctly and fasten it with screws. On a double-drive gate, attach the striker bar first, bring both gates together, align the latch catch to the striker, and fasten the catch to the gate frame—then fine-tune with the turnbuckle.

If you’re comparing units side by side, the tested wooden gate lock roundups are worth a look before you commit to a model.

Slip-lock hardware addresses one more detail people forget: the injury hazard. The Ameristar catalog notes a “slip-lock” brass button and a safety contour intended to reduce protruding injury hazards, plus a positive-capture feature that keeps the striker from releasing while the gate is locked. Those small engineering choices are why two latches that look alike at arm’s length behave differently.

How Do You Choose Without Overbuying?

Pick by the job, not by the label. A latch for ordinary closure, a lockable latch when the gate needs to stay shut to people you haven’t invited, and certified child-safety hardware wherever a child could reach the gate.

The most common mistakes, in order: treating a latch as a lock, buying without checking gate material, post shape, thickness, swing direction, and clearance, and assuming “locking” means keyed. Fourth is installation—a striker mounted out of line gives you partial engagement, and a partially engaged latch is a gate that opens when you lean on it.

Check the gate first. Then pick the hardware that matches what the gate has to do.