Within about an hour you can replace that internally latched front door lock with a keyed.
How to change deadbolt lock on front door.
To change the lock on a regular door knob first use a screwdriver to remove the door knob and the old latch.
To fix this add a custom cut plate or a door reinforcer.
Many new lock sets allow you to adjust the latch to either distance.
How to re key a door lock change your locks yourself by removing the lock cylinder and changing the pins.
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Then unscrew and remove the set plate which is the piece of metal that faces the doorframe.
Next put a new latch in and replace the door knob.
Landlords often have occasion to change the deadbolt in a front door because each time a tenant moves out and a new one moves in you need to make.
Select a lock with the same setback.
And if you want extra added security consider electronic door locks or even smart locks.
To change a deadbolt lock start by unscrewing the old deadbolt and removing the interior and exterior faceplates.
Alternatively you can buy a re keying kit for the lock you already have.
Detailed diy instructions on how to replace a sticky or broken deadbolt.
Once you have the kit remove the lock cylinder from the door knob so you can change the pins inside.
How to change a deadbolt lock in a metal door.