The easiest way to do do this if the old door was a good fit is to lay the new door on top of the old door so the edges are flush.
How to fit a lock on an internal door.
Shake the door a bit to make sure it is secure.
Use a sharp pencil to mark lines on the door frame at the top and bottom of the.
Place a wedge at the bottom of the door to keep it in place.
To hold the door closed the catch of the mortice lock sits in a keep that is fixed to the door frame.
How to fit a mortice lock to an internal door this entry was posted on february 7 2014 by will.
It is simply a catch that holds the door closed with a handle either side to open and close it.
Purchase a door stop or professional grade door wedge from a local hardware store or from an online retailer.
The whole unit is simply fitted into the door opening by fixing with low expanding foam or silicone.
Mark out your hinges on the door.
First mark out the place where the strike plate has to be fitted.
Then line up a combination square with the old door s hinge mortises and transfer their locations to the new door marking the edges with a utility knife.
Each internal doorset comes with the lining and architrave which is then slotted in to a pre cut section with a fitted handles and lock option.
After you ve fitted the lock in the door you need to fit the strike plate to the door frame.
Either replacing a mortice lock or fitting one on a brand new door is a task that might be a little beyond the reach of your average diy enthusiast.
Turn the key so the locking bolt protrudes from the lock and hold the door against the door frame.
Fit the wedge into the bottom of the door as close to the wall as possible.