How to Fix a Door That Won’t Latch
Updated September 18, 2026
Can I do this myself?
Safe to DIY
Yes, fixing a door latch is a safe beginner job. Take care with chisels and files, check for hidden wiring before driving long screws into the frame, and don’t leave an exterior door unsecured overnight.
A door that won’t latch swings open on its own, rattles in drafts, and can’t be locked properly. In almost every case the latch itself is fine: the problem is that the latch bolt no longer lines up with the hole in the strike plate on the door frame. Doors sag slightly over time as hinge screws loosen, and houses shift a little with the seasons, so a gap of just a few millimetres is enough to stop the latch from catching.
The good news is that you can find exactly where the latch is hitting with a simple trick, then fix it by tightening the hinges, driving a longer screw into the wall framing, or moving or enlarging the strike plate opening. These are basic hand-tool jobs that most people can do in under an hour.
Work through the fixes in order, from the easiest (tightening screws) to the more involved (moving the strike plate). Often the first step solves it.
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Signs of the problem
- The door closes but doesn’t click shut and swings back open
- You have to push or lift the door to get it to latch
- The latch bolt hits the edge of the strike plate and leaves scratches
- The lock bolt or deadbolt is hard to turn or won’t extend fully
- An uneven gap around the door, wider at the top on one side
- The door rattles in its frame when closed
Common causes
Door sagging from loose hinge screws
Most commonThe top hinge carries most of the door’s weight. When its screws loosen, the door tilts down and away from the frame, so the latch drops below the strike plate opening. This is the most common cause and the easiest fix.
Misaligned strike plate
Most commonSeasonal expansion and contraction of the frame, or a strike plate that was never set quite right, can leave the opening slightly too high, too low, or too far from the latch. A gap of 3 mm (1/8 in) is enough to stop it catching.
Swollen door or frame
SometimesIn humid weather or during the monsoon, wooden doors can swell and rub the frame. The door then stops before the latch can reach the strike. It often fixes itself in drier months, but may need light planing if it persists.
Worn or sticky latch mechanism
SometimesIf the latch bolt doesn’t spring out fully, or sticks halfway, it can’t engage even when aligned. Dirt, dried paint or a worn spring inside the latch are the usual reasons.
House settling
Less commonGradual movement of the building can pull door frames out of square. If several doors stopped latching around the same time and you see new cracks in walls, the frame itself may have shifted.
Safety first: before you start
- Critical:Before driving long screws into the door frame, check the wall beside the door for light switches, cables and pipes, and use a stud and wire detector if you have one.
- Critical:Wear safety glasses when chiselling, filing metal or drilling. Metal filings and wood chips fly unpredictably.
- Keep your hands behind the cutting edge when using a chisel and clamp or hold small parts firmly.
- If you are working on an exterior door, plan to finish the same day, or make sure it can still be locked securely overnight.
- Support the door with a wedge under the bottom edge if you remove more than one hinge screw at a time.
Tools & materials
Tools
- Screwdrivers (Phillips and flathead)
- Drill/driver with bits
- Lipstick, dry-erase marker, chalk or masking tape (to mark the latch position)
- Metal file (flat or half-round)
- Wood chisel, 12-20 mm (1/2-3/4 in)
- Utility knife
- Safety glasses
Materials
- Wood screws, around 65-75 mm (2.5-3 in), for the hinge and strike plate
- Wooden toothpicks or matchsticks and wood glue
- Wood filler and touch-up paint
- Dry lubricant or graphite for the latch
Step-by-step fix
- 1
Watch where the latch meets the strike
Close the door slowly and watch the latch bolt as it reaches the strike plate. Look at the gap around the door: a wider gap at the top on the latch side, and a tight gap at the bottom, means the door is sagging. Scratches above or below the strike opening show which way the latch is missing.
- 2
Mark the exact latch position
Rub lipstick, chalk or a dry-erase marker on the end of the latch bolt, then close the door gently against the frame a few times. The mark it leaves on the strike plate shows exactly where the latch hits. Alternatively, put a strip of masking tape over the strike plate and look for the dent or smudge.
Tip: Measure how far the mark is from the opening. Under 3 mm (1/8 in) can usually be fixed by filing; more usually needs the hinges tightened or the strike moved.
- 3
Tighten all hinge screws
Open the door and tighten every screw on each hinge, on both the door and the frame side. Use a hand screwdriver to avoid stripping them. If a screw spins without tightening, pack the hole with glue-dipped toothpicks or matchsticks, trim flush, let it set, and re-drive the screw. Then test the latch again.
- 4
Pull the door up with a long screw
If the door still sags, remove one of the frame-side screws on the top hinge (the one closest to the doorstop) and replace it with a 65-75 mm (2.5-3 in) wood screw. This reaches through the door frame into the wall framing behind it and pulls the top of the door back toward the hinge side, lifting the latch end. Drive it slowly and stop when snug.
Warning: Check for cables near light switches beside the door before using long screws. Don’t overtighten, as you can pull the frame out of line and create a new gap.
- 5
File the strike plate opening
If the latch misses by only a few millimetres, remove the strike plate, clamp it or hold it firmly, and file the edge of the opening on the side where the latch hits. Enlarge it just enough, test-fitting as you go. You may also need to deepen the hole in the wood behind it with a chisel so the latch can extend fully.
- 6
Move the strike plate if needed
For a larger misalignment, move the strike plate. Unscrew it, use the lipstick mark to decide the new position, and trace the plate outline. Chisel the recess (mortise) and the latch hole in the new spot so the plate sits flush. Fill the old screw holes with glue and toothpicks or wood filler so the new screws aren’t pulled into the old holes, then screw the plate in place.
Warning: Keep both hands behind the chisel edge and tap lightly. Make shallow cuts rather than one deep one.
- 7
Check the latch mechanism
With the door open, press the latch in and let it go several times. It should spring out quickly and fully. If it sticks, clean off dirt or paint and apply a little graphite powder or dry lubricant. A latch that stays sticky or has a broken spring should be replaced; take the old one with you to match the backset and faceplate size.
- 8
Test, then touch up
Close the door normally several times from both sides and lock it if it has a lock. It should click shut without pushing or lifting. Fill and paint any visible old holes or chisel marks on the frame.
Stuck on a step?
Point your camera at it and a Fixwise expert voice will guide you through it, safely.
How to check it's fixed
- The door clicks shut with a normal push and stays closed
- The lock or deadbolt turns easily and extends fully into the frame
- The gap around the door is roughly even on the top and latch side
- The door doesn’t rattle when closed
When to stop and call a professional
- Several doors stopped latching at the same time, especially with new cracks in walls or ceilings
- The door frame is split, rotten or loose in the wall
- An exterior or security door can’t be locked and you can’t fix it the same day
- The door is badly warped or twisted along its length
- A fire-rated door (for example, to a garage) won’t self-close and latch properly
How to prevent it
- Check and tighten hinge screws once a year, especially on heavy or frequently used doors.
- Use a 65-75 mm (2.5-3 in) screw in at least one hole of the top hinge from the start.
- Seal all edges of wooden doors (including the top and bottom) to reduce seasonal swelling.
- Avoid slamming doors, which loosens hinges and strike plates over time.
Frequently asked questions
Why won’t my door latch all of a sudden?
Most often a hinge screw has worked loose and the door has dropped slightly, or humidity has swollen the door. Tighten the hinge screws first. If the weather recently turned humid, the door may return to normal when it dries out.
How do I know if the latch is too high or too low?
Put lipstick or chalk on the latch bolt and close the door against the frame. The mark on the strike plate shows exactly where the latch touches, relative to the opening. Masking tape over the strike works too.
Can I just file the strike plate instead of moving it?
Yes, if the latch misses by about 3 mm (1/8 in) or less. Filing the opening is quick and neat. For bigger misalignments, fix the sag first, then move the plate if needed.
Does a long screw in the hinge really help?
Yes. Short hinge screws only grip the thin door frame. A longer screw reaches the solid wall framing and pulls the whole door back into position, often solving the latch problem on its own.
Should I replace the whole latch?
Only if it sticks, doesn’t spring out fully, or is broken. Most latch problems are alignment issues. If you replace it, match the backset (distance from the door edge to the centre of the handle) and the faceplate shape.
This guide is general information, not professional advice. Homes differ, so follow your product manuals and local codes. If anything looks different from what's described, or you feel unsure, stop and call a qualified professional. In an emergency, leave the area and call your local emergency number.
Related guides
Sticking door
Safe to DIYUsually yes. Tightening hinges and light sanding are safe beginner jobs. Taking a heavy door off to plane it needs two people, and sanding old paint needs a lead test first. Sudden large gaps or new cracks point to house movement and need a professional.
Loose door handle
Safe to DIYYes, this is a safe, easy repair with just a screwdriver. The main risk is being locked out or in, so keep the door open while you work and make sure exterior locks are fully working before nightfall.
Squeaky door
Safe to DIYYes, this is one of the easiest and safest home repairs. The only real risks are a heavy door dropping if you pull every pin at once, and oily drips on floors and carpets.
Drafty window
Safe to DIYYes, sealing drafts is safe and easy from indoors. Take care on ladders for outside caulking, avoid open flames when hunting for leaks, and test old paint for lead before scraping window frames.