The situation is this: I live in a rented flat in a building. There is a door that allows access to the building, which can be opened from the outside only with the key.
After that, there is the door to my flat. It has a mortise lock and I have a couple of issues with it:
- Both the inside and outside handles can operate the latch
- The deadbolt does secure the door but it is only one turn
I am not familiar with how these things work in the UK, I only recently moved here, but that doesn't sound really secure to me.
I am looking for a solution to better secure the door with only one caveat: all the doors in the building seem to have the same finish, and I would prefer to avoid change that, so I would prefer to avoid adding a second lock, as it would be visible from the outside, and I would keep the same handle and plates, at least outside.
Is there a mortice lock that would resolve the two above issues? I would have someone else buy and fit it, so some terminology that I could use to better have him understand what I want is welcome.
P.S. Door is a wooden door, not sure the type of wood.
EDIT: I add a few photos of the setup that might be useful to identify all the pieces. My main objective is improve security when I am not home.