Wooden gate locks split into four main families: surface-mounted, mortise insert, keyed self-latching, and keypad or padlock retrofits.
A gate that swings shut but never latches is a gate that gets propped open with a brick. The lock you choose decides whether that stops — and whether the gate survives ten winters of swelling timber. Fit comes before features: stile depth, latch gap, and handing rule out more locks than price ever does.
Below are the types of wooden gate locks explained by how they mount, what they demand of your gate, and where each one fails.
Surface-Mounted Latches: Bolted On, No Recessing
A surface-mounted lock bolts to the face of the gate rather than sitting inside the timber, so it needs no mortising and no welding. The Gatemaster Superlock range is the reference example: its published overview lists a slim 2-3/4-inch case, a removable and adjustable latch bolt, left/right hand adjustment, and bolt-on installation.
Installation follows the maker’s method — mark and drill three holes in the gate frame, position the lock and keep, then bolt the assembly to the gate and post. Gatemaster’s digital versions use mechanical keypads and run without power or batteries, which makes them the practical pick for a gate with no wiring nearby.
Model-dependent frame ranges cover 3/8–1-1/4 inches and 1-1/2–2-1/2 inches, so measure your post and stile before ordering. Success check: the latch clicks into the keep with the gate closed, and the key or keypad releases it without you leaning on the gate.
Mortise Insert Locks: Recessed, Cleaner, Less Forgiving
A mortise lock is recessed into the gate stile, which hides the body and usually pairs a self-latching day bolt with a hook or dead bolt. The reward is a tidy face and stronger anchoring; the cost is that the stile must be deep enough to take the body.
Three current models show how much the measurements vary:
- H-WOOD style: 100% stainless-steel mechanism, 2-3/8-inch backset, hook throw 1-1/4 inches, cylinder-to-handle center 3-5/8 inches, and a latch bolt that adjusts continuously up to 3/4 inch without removing the lock.
- Eightylock-W style: 2-3/8-inch backset for profiles at least 3-1/8 inches deep, day-bolt adjustment up to 3/8 inch, hook throw 13/16 inch.
- Prime wooden-gate insert: 2-3/8-inch backset, stainless-steel cover plate, reversible day bolt, key-operated self-latching bolt.
Handles and cover shields are separate purchases on several of these, and cylinder compatibility is not universal — H-WOOD takes Europrofile cylinders while other models specify particular cylinder lengths. Recess the body to the maker’s dimensions, set the keep at the required gap, and confirm the hook enters the keep fully before final tightening.
| Lock Type | What It Needs | Watch Out For |
|---|---|---|
| Surface-mounted latch | Flat gate face, three drilled holes | Frame range varies by model |
| Mortise insert | Stile at least 3-1/8 in deep on most models | Handles and shields sold separately |
| Keyed self-latching | Keep aligned to the latch gap | Swelled wood throws off alignment |
| Mechanical keypad | Accurate alignment, no power needed | No key backup on some units |
| Padlock and hasp | Flat mounting surface | Weak hasps defeat good padlocks |
| Electric rim lock | Wiring and a power supply | 12 Vac, 15 W, 1.25 A draw |
| Europrofile cylinder (H-WOOD) | Correct cylinder length | Ordered separately from the lock |
Self-Latching, Keypad, Padlock, And Electric Options
A keyed self-latching lock closes against a keep and engages the latch automatically, then a key works the latch or deadlocking function. This suits a gate you want shut behind you without fumbling for keys every time.
Mechanical combination locks replace the key entirely. Gatemaster describes its digital gate locks as mechanical, power-free units for wooden or metal gates — no batteries to die in February.
Padlock and hasp is the retrofit route, and it works only as well as the hardware around it. Use a padlock rated to resist bolt cutters and pry bars, and mount it on a hasp that can’t be unscrewed from outside.
Electric rim locks exist for wooden frames but require compatible wiring and a power supply. Listed versions run at 12 Vac, 15 W, 1.25 A with adjustable 50–80 mm backsets, in latch-only and latch-plus-deadbolt builds.
If you’d rather compare specific models than specs, our tested wooden gate lock roundup covers the ones that held up in the field.
Matching The Lock To Your Gate Before You Order
Wooden gates vary widely in stile depth and construction, and a lock built for a metal profile often will not fit a timber stile — wooden-gate versions are identified separately. Confirm stile or frame depth, gate thickness, latch gap, handing, backset, cylinder type, and available space before you buy anything.
Exposed wood swells and moves with moisture, which misaligns the latch and keep. Allow adjustment room and seal cut edges against water intrusion; the SHKW Hybrid keep, for instance, requires a 7/8-inch latch gap.
A lock will not rescue a sagging gate. The post, hinges, frame, keep, and lock must align and resist pry forces — test normal latching and locked operation before you finish tightening, and make sure the gate doesn’t bind or need force to close.
Surface-fix models like the Gatemaster range are documented in the Superlock overview, and the full hardware line sits in the Gatemaster gate locks catalog. Prices are not published on those pages, so check a dated retailer quote rather than trusting a figure you saw last year.
Common Questions
Can I fit a mortise lock to a thin gate stile?
Usually not. Most mortise models need a profile at least 3-1/8 inches deep to take the lock body, and a thin stile leaves nothing to recess into. Measure the stile first; if it’s too shallow, a surface-mounted latch is the realistic alternative.
Do mechanical keypad locks need batteries?
No. Gatemaster describes its digital gate locks as mechanical, power-free units, so there are no batteries to replace and no wiring to run. They still depend on accurate latch-to-keep alignment, so check the gate hasn’t sagged before blaming the keypad.
Why does my latch stop catching after rain?
Swelled timber moves the gate slightly out of line with the keep. Dry weather can fix it on its own, but sealing cut edges and leaving adjustment room prevents the cycle from repeating. If the gate also drags, the hinges or post are the real problem.
Sources
- EAC/Gatemaster. “Gate Locks & Hardware” Supplies the Superlock specifications and the three-hole surface-mount method.
- Abbey Hardware. “Superlock Overview” Confirms the slim case, adjustable latch bolt, and hand adjustment.
- Federal Register. “Safety Standard for Gates and Enclosures” Source of the 10-pound release-force requirement and its July 6, 2020 publication date.