The fix a short term fix is to move the strike plate to align better with the stuck door latch.
How to fix french door lock.
Open the door at the side where the jamb will be shimmed and stabilize it with a doorstop.
The more you use your french doors the more likely the thread of the screws will drag against the walls of their casings and loosen.
Step 3 douse the mechanics of the lock itself with spray lubricant.
Open the operable door using the knob or lever handle.
Nine times out of ten if the lock is stuck or if the key won t turn enough to lock your doors it will be due to some sort of obstruction in the mechanism itself.
If this is the case you may need to remove the entire doors so you can renew the holes.
Use a wood chisel and hammer to carefully remove the vertical piece of casing along the side of the.
Once you fix french door alignment by screwing all the hinges tight to the door frame and securing the french door jam to the rough in door opening buck plate and finally we fix french door top.
Turn the lock back and forth as you spray so that the lubricant can get deeper into the mechanics and allow the lock to slide free.
From there you can either widen the hole both of the wood and metal or you can unscrew the strike and re secure it in the proper position.
Spray the inside mechanics of the french door knob thoroughly using canned air duster to dislodge any dust or other large buildup.
The fix will depend on what locking mechanism you ve chosen.
If the french doors have dropped due to loose screws in the hinges attempt to tighten them before you test the doors again.
By shutting your door you can mark the point on the door frame that latch is coming in contact with.