Any suggestions on how to open a locked UPVC side door to my son in law and daughters back garden? They locked it about two weeks ago and haven't been able to open it, they've pushed, tugged, banged after several normal attempts to open it but to no avail. It seems that either the mortice lock is not releasing so they cannot push the handle down to release the roller bar on the edge of the door, or the lock is free but the roller bar is jammed. Any suggestions on how they can open it without the need to damage the door. Unfortunately they cannot afford locksmiths prices as they are struggling buying the bungalow. I can't look at it myself as they live in Nth Devon and I'm in West Sussex. Many thanks in anticipation. < No it's not a condition, you're thinking of constipation.