For this installation, alignment is key. A deadbolt kit will usually come with a paper template to help you mark the door before you start drilling. In the video above, This Old House general contractor, Tom Silva is adds a deadbolt to a door that is an inch and 3⁄4 in thickness.
You’ll need to be comfortable using a drill to install a deadbolt yourself. To ensure proper placement use a speed square to check the drill is square in all directions as you use it, as shown in the video.
How Much Does It Cost to Install a Deadbolt?
Prices for deadbolt locks are typically between $25 to $300 depending on the the quality. Deadbolt installation typically costs between $75 to $400, depending on if you do it yourself or hire a professional to help you.
How to Install a Deadbolt in 15 Steps
- Position paper template on door edge; mark center holes on face and edge.
- Drill face hole using hole saw; drill from both sides to prevent splintering.
- Drill edge hole with spade bit.
- Insert deadbolt into edge hole and mark its outline.
- Chisel out mortise for deadbolt.
- Screw deadbolt to edge of door.
- Screw deadbolt mechanism to door, with keyed cylinder on the outside and turn lever on inside.
- Mark end of deadbolt with felt-tip pen.
- Close the door, throw bolt to leave mark on doorjamb.
- Use strike plate to mark deadbolt hole on doorjamb.
- Drill deadbolt hole in jamb with spade bit.
- Use utility knife to mark mortise outline for strike plate.
- Cut strike plate mortise with chisel.
- Set strike plate in jamb mortise and secure with long screws.
- Close door and test deadbolt.
What Tools Do I Need to Install a Deadbolt?
Tools & Materials
- Drill/driver
- Keyhole saw
- Spade bits
- Utility knife
- Hammer
- Chisel
- Pencil
- Speed Square
