There are 2 remedies for this that will help get the latch moving again.
New door lock not latching.
It s a reflection of the durability of the internal door lock types not the amount of security they provide.
How to fix a door that will not lock.
How to adjust a door that will not latch.
How to fix a door that won t latch shut in 2 min click show more for all the links as a professional locksmith it s something that i do regularly so.
Latch does not move.
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If not do the lipstick test smear lipstick on the latch and stick masking tape to the strike plate.
When the doorknob doesn t latch completely and the door won t stay closed the fault usually isn t with the knob but with the strike plate.
While it is possible it isn t functioning properly or is out of alignment it.
The striker fails to penetrate into the door jamb because the door.
Locks that are grade 1 offer the highest level of strength and security.
When your door doesn t latch the problem may not be with the latch itself.
Loosen the knobs a little to relieve some of the pressure on the door and to free up the latch a little.
One common problem that is associated with door knobs is that the latch will seem to be stuck or not move easily.
Sometimes you can clearly see the misalignment.
Some exterior door locks are designed to automatically lock when the door closes.
This can cause the latch to stay inside the door whenever the door knob is turned.
Step 3 align.
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If not there is more to look for.
Door locking problems almost always originate in the door latch not the locking mechanism.
When a door latch won t catch it s because the latch doesn t align with the hole in the strike plate.