upvc door locking mechanism not working properly

jonnydeppiwish!

Have you adjusted the door? It may need some adjustments on the hinges. YouTube has some great videos on how to do it.

twopenny

I'd first check if the thing that the lock goes into is level with the catch that goes into it (technical jargon ;-)

I found that shifting it a tad, a tightening of a screw was all that's needed in one case. Somehow the door had dropped just a fraction but enough to cause problems. But easily solved.

Recently had the WindowWoman round to do gaskets in windows and she threw in doing the doors for free. Sheesh I wish I'd got her earlier. Every door works perfectly now just by knowing the right way to adjust.

B0bbyEwing

Sorry a bit late but just to give feedback since it's always annoying when the OP never bothers.

So far so good (touch wood). Beyond squirting WD40 & lithium grease I've done absolutely nothing & the lock has been fine since.