Easy to follow instructional video on how to install a mortice lock in rebated double timber doors.
Fitting a mortice lock to a rebated door.
Position a mortice deadlock about halfway up the door and fit a night latch on your front door one third of the way down.
The fitting instructions supplied with a mortice lock will normally specify the thickness of door it is designed for problems will arise if a mortice lock is fitted to a door thinner than it is designed for.
Unlike a normal door where you would fully recess the latch into the door and it would close against a frame with a rebated double door like ours the latch actually needs to sit partly out from being fully inside the door.
When possible fit two locks on your front door both to bs3621 standard.
When the door needs to be opened a door handle or sometimes a knob is turned which in turn is attached to the latch via a door bar or door spindle that runs through the latch.
If you want to fit one yourself you ll need to be capable of woodworking as well as using the tools required to fit the lock.
To install this lock see section 4 below.
The second important part of this how to is to buy a rebate kit.