UPVC and composite doors now outnumber traditional wooden doors. It's no surprise that this accounts for the majority of my work as a door doctor.
The main problem with uPVC doors is the plastic construction, which over time begins to warp, stretch and crack. This leads to poor fitting, a door that begins to sag and eventually not lock correctly.
Getting a uPVC door re-aligned is the first step and will ultimately prevent further damage to the door and it's locking system if maintained. A stitch in time saves nine, as the old saying goes.
For those that failed to address the above, you're no doubt in a situation where the lock no longer works, is temperamental or worst case scenario, completely jammed closed.
Again this is repairable, however a little more costly than a simple adjustment. It's usually remedied by carefully unjamming the lock mechanism and replacing worn or damaged parts for new. In some cases where locks are obsolete, the next nearest modern alternative will need retrofitting.
For those having really bad luck, I provide an emergency locksmith service to get you back in/out of your door. I've noticed that these things often fail at the worst possible time! If you have any questions or concerns about your door, just give me a call.