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.
A mortice mortise deadlock is a strong form of lock that is embedded within a cut out pocket space inside the door or furniture structure as well as having external components.
To install this lock see section 4 below.
When possible fit two locks on your front door both to bs3621 standard.
If you only fit one lock go for an automatically dead locking night latch made to bs3621.
Mortice latch or tubular door latch showing the latch casing the catch and door handle spindle insert.
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.
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.