Latch hits above or below the strike
You can see the latch bolt land too high, too low, or only clip the edge of the strike plate.
Start here: Check hinge screws, door sag, and whether the gap at the top of the door is uneven.
Direct answer: If a door won't latch, the usual problem is simple misalignment between the latch bolt and the strike plate, often from loose hinges, sagging, or seasonal frame movement. Start by watching where the latch hits before you replace any hardware.
Most likely: Most often, the top hinge screws have loosened or the door has dropped just enough that the latch bolt hits the strike plate too high, too low, or on the edge instead of entering the hole cleanly.
Close the door slowly and look at the latch and strike like a carpenter would. You want to know whether the door is rubbing, sitting crooked, bouncing off weatherstripping, or whether the latch itself is sticking. Reality check: a door can be off by less than an eighth of an inch and still refuse to catch. Common wrong move: filing the strike opening bigger before tightening the hinges and checking the reveal.
Don’t start with: Don't start by buying a new handle set or chiseling the frame. Most non-latching doors are alignment problems, not failed hardware.
You can see the latch bolt land too high, too low, or only clip the edge of the strike plate.
Start here: Check hinge screws, door sag, and whether the gap at the top of the door is uneven.
The latch bolt reaches the strike opening but does not spring fully, or the handle feels stiff.
Start here: Check whether the door latch bolt moves freely with the door open and whether paint, dirt, or a bent strike is blocking it.
The door catches, but only with extra force, shoulder pressure, or by lifting the knob side.
Start here: Look for weatherstripping pressure, a swollen door edge, or a door that has dropped on the latch side.
The latch and deadbolt are both hard to engage, especially on an exterior door.
Start here: Treat this as an alignment problem first, not a lock problem. Check for frame shift, seasonal swelling, or a door that binds elsewhere.
This is the most common reason a door stops latching. The latch side drops and the bolt no longer meets the strike opening squarely.
Quick check: Open the door halfway and lift gently on the knob side. If you feel play at the hinges or see movement, start there.
If the latch bolt is close but not entering cleanly, the strike may be shifted, bent, packed with paint, or too tight at the lip.
Quick check: Close the door slowly and watch for shiny rub marks on the strike plate or latch bolt.
When the latch bolt does not spring out crisply with the door open, the problem is in the door hardware itself, not just alignment.
Quick check: Press the latch bolt in by hand with the door open. It should move smoothly and snap back fully every time.
A wood door can swell, weatherstripping can push back too hard, or the frame can rack enough to keep the latch from reaching home.
Quick check: Look for rubbing at the top corner, fresh paint scuffs, or a door that latches differently in wet weather.
You need to separate a hardware failure from a simple alignment issue before touching screws or buying parts.
Next move: If you can clearly see the miss pattern, you have your starting point and can fix the right thing first. If the door movement is hard to read, use a pencil mark or a small piece of painter's tape on the strike to show where the latch is landing.
What to conclude: A visible miss at the strike usually means alignment. A latch that reaches the opening but still will not catch points more toward the latch or strike opening itself.
Loose hinge screws cause a huge share of latch problems, and this is the least destructive fix.
Next move: If the latch now meets the strike and clicks shut normally, the problem was hinge sag and you can stop here. If the latch still misses the strike the same way, move to the strike plate and latch checks.
What to conclude: Improvement after tightening confirms the door was dropping or shifting at the hinges. No change means the strike position, latch hardware, or frame shape still needs attention.
A bent strike lip, paint buildup, or a slightly shifted strike plate can stop a good latch from catching.
Next move: If the latch catches after tightening or clearing the strike, the hardware was being blocked rather than the door being badly out of line. If the latch still lands off-center, the door and frame are still out of alignment. If it lands centered but will not spring, test the latch itself next.
This tells you whether the latch assembly is actually failing or whether the frame is the only problem.
Next move: If the latch starts moving freely and the door now catches, the issue was a loose or sticky latch assembly. If the latch still sticks or will not spring out fully with the door open, replace the door latch assembly or the full door handle set if the latch is not sold separately.
By now you should know whether this is a simple adjustment, a confirmed latch failure, or a frame problem that needs more than basic DIY.
A good result: If the door latches smoothly from normal hand pressure and stays shut without bouncing open, the repair path was correct.
If not: If the door still needs force, lifting, or repeated handle turns, stop chasing the latch and have the door and frame evaluated for warping, settling, or jamb movement.
What to conclude: A clean latch after small adjustments points to ordinary wear and movement. Ongoing trouble after those checks usually means the opening itself has shifted enough that hardware alone will not solve it.
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That usually means the door has sagged on the hinge side. Tightening the top hinge screws often helps first. If a hinge is worn or bent, it may need replacement.
Only after you confirm the hinges are tight and the door is sitting as well as it can. Filing first can hide the real problem and leave the door sloppy or insecure.
Test it with the door open. If the latch bolt does not retract and spring back smoothly every time, the latch hardware is the problem, not just alignment at the frame.
Wood doors and jambs can swell, and weatherstripping can push harder in damp weather. If the door also rubs or binds, the fit of the door is part of the problem.
Not always. If the latch assembly is sold separately and the handle is still solid, replacing just the latch can be enough. Replace the full door handle set when the handle is loose, worn, or tied into the latch failure.
Yes, especially on exterior doors. If the weatherstripping is bunched up or too compressed, it can push the door back before the latch catches. Still check hinge and strike alignment first.