If it s a matter of friction on the strike plate try to tighten both the plate and the lock on your door.
Sticky door lock.
Most times you ll find that the door sticks along the top because the door is sagging.
The handle or knob must be jiggled to unstick the latch.
To fix a door lock that doesn t turn easily.
It doesn t really pay to have interior door knobs or locks professionally repaired unless they are special.
The door latch is not extended before rotating the knob.
After enough use you might find that your door lock has begun to stick making it difficult to put in turn or pull out your key.
Squirt a little powdered graphite available in squeeze tubes at home improvement and automotive stores in the keyhole of the lock.
An improperly functioning latch may be the result of a poorly fitting door.
For serious lock problems it is usually best to call a locksmith or to replace the lock entirely.
Insert the key in the lock and turn it several times to distribute the graphite.
Once the door is open try to actuate the door latch with the handle.
Often turning these four screws slightly clockwise is enough to eliminate the scuffing.
Fixing a few stubborn locks might involve disassembling cleaning and then reassembling the lock.
Fortunately most front door lock problems can be.
Sticking door locks can be attributed to everything from slight settling of the house to a buildup of dust and dirt within the locking mechanism.
First clean the keyhole with a penetrating lubricant like wd 40.
Many people put up with the aggravation of a sticking door lock for years.
Most interior door knobs are relatively inexpensive to replace.
This occurs when dust dirt grime and other buildup accumulates on the internal.
I can unlock the door if i try a few times but the key has a difficult time turning as the deadbolt is sticky.
My front door deadbolt lock is hard to unlock and open when i put the key in and turn.
How to fix a sticky lock.
Ironically by cleaning and oiling them you can fix most locks in a matter of minutes.
You can even see where the door has scraped against the frame.
We have been going through our garage door to get in the house because of this.