When your upvc door or window lock gets jammed it normally is a result of a defective lock mechanism.
Upvc door top lock stuck.
There are many types of multi point lock on the market used in upvc composite doors so hard to tell without looking most likely a fault with multi point and could be any of the components deadbolt shoot bolt etc etc undoing hinge screws may work if you can get to them flag hinge which is unlikely if they have a grub screw holding the cover in place pins could be removed if a older door.
Dropped door this is probably the most common reason why your upvc won t lock when closed.
Freeing up or replacing the shootbolts and rollers.
There are 2 main mechanical parts to its lock the euro profile cylinder and the multi point locking system.
Checking the connection between the locking mechanism gearbox and the shoot bolts.
All of these factors can make locking and opening your upvc door difficult.
The door won t close the door bangs against the lower metal locking system.
Upvc door won t lock when closed shut should your upvc door not lock when closed shut this is due to alignment and in most cases is easy to fix either by adjusting the lock strike keep or roller points or by adjusting the door hinges.
Jammed lock or lock is stuck.
Basically when it gets a bit warmer or colder than normal outside the door starts to shrink contract and then expand.
Common problem with upvc door lock.
Repairing a jammed or stuck upvc window.
A locksmith will usually just charge a labour price for this sort of job likely to be from 65 per hour.
The key may not turn all the way in or will not turn the lock in some cases.
The door lock sometimes jammed cannot open the door.
The repair will usually involve either.
What happens is that the locking points and keeps misalign making the door harder to open and close.