In order to understand the uPVC door locking mechanism, you need to get familiar with the type of locks used. Contrary to popular belief, however, not all lock types are suitable for all types of doors. UPVC doors require a special type of lock and you need to know exactly what type yo...
How to open a UPVC window from the outside? UPVC means unplasticized polyvinyl chloride, a plastic material that can be an alternative to wooden or glass window frames. UPVC windows employ traditional locks (sash, casement, or sliding), so they can be opened, too, using the previous tricks...
Remove the handle and try to open the latch from inside the lock mechanism. You may also be able to pry the latch open using a thin screwdriver or something similar between the door and the door frame. Most latches have a beveled side. Attack it from that side (typically the outside)...