If you have any lock mechanism issues it s best to leave the repair.
Upvc door will not lock.
Look on the side where the handle is you will see packers on the top and sides try and get a couple of packers and lift on the handle side about 3 4mm and if the door will lock then make sure you don t use anything metal to lift the door and check to see if any packers have slipped down the side of the glass.
The locking mechanism runs across the entire length of the inner face of the door.
If your upvc door won t lock even when still open this is usually because of the following reasons.
This will cause only further damage and make repairs harder and costlier.
This means that there are a few points of failure when it comes to diagnosing the issue.
Make sure adjust all of your upvc door s hinges otherwise it still won t close and lock properly.