Remove the keep and drill a 16mm hole about 10mm deep.
How to fit a mortice lock to a door.
This will be your guide when.
Trade expert michael demonstrates how to quickly fit a 5 lever security mortise 5 lever mortise lock and handles in this easy diy video by studhawk.
On doors with a horizontal mid rail the lock should be positioned clear of the mid rail joints otherwise the joints will be weakened the lock should be fitted in the centre of the rail to clear the upper and lower joints.
To avoid any error you should mark the position where you want to install the lock on the door.
Place the body of the mortice lock against the side of the door and mark the top and bottom edges of the main body on the side of the door.
Fit the lock and check the positions of the door handle spindle and key hole adjust these if necessary.
Push the keep on and mark a pencil line all the way round the hole inside for the latch.
Use the 10mm chisel to square the hole up cutting at the top and bottom first.
Using your measurement mark out both the top and bottom of the latch.
As a guide the height of your lock should be about 1 metre high.
The correct positioning of the lock is crucial.
Carefully remove the timber inside the lines using the same technique as for the door latch.
Taking and using measurements 1.
Usually the professionals measure up to 36 inches from the bottom where the lock they set.
Measure where the lock will fit on the door.
Fit the lock into the door and secure using screws.