How to Measure For Installing a Deadbolt Lock

Installing a deadbolt is an inexpensive way to give your home an added measure of security. Doors and windows are the most common points of entry for thieves and you can add deadbolt locks to any door without having to change out your existing door hardware.

Difficulty: Moderately Easy

Instructions

Things You'll Need:

• Tape measure
• Pen or pencil
• Lock template
• Tape

Measuring With a Lock Template

1. Determine if you want the deadbolt above or below the current lock set.

2. Measure at least 6 inches above or below your existing hardware and mark the spot. Make sure the location of the deadbolt will not interfere with any of your existing door hardware.

3. Tape the lock template that came with your deadbolt to the door according to the manufacturer's instructions.

4. Make sure the template is square with the door.

5. Use your pencil or pen to mark where you need to drill the holes for the deadbolt.

6. Repeat the procedure for the other side of the door so you'll know exactly where to drill on both sides of the door.

Measuring Without a Lock Template

7. Determine the current backset of the existing door hardware. Measure from the edge of the door to the highest point of the existing hardware. It's usually 2 3/8 to 2 3/4 inches.

8. Measure at least 6 inches above or below your existing hardware and mark the spot. Make sure the location of the deadbolt will not interfere with any of your existing door hardware.

9. Mark the backset you determined in Step 1 at the proper height you measured Step 2.

10. Repeat the process on the other side of the door.

Tips & Warnings

• Adding deadbolt locks may save you money on your home insurance. Make sure to check with your agent.
• Sometimes just the presence of a deadbolt lock is enough of a deterrent to keep burglars from breaking into your home.
• Installing a deadbolt can take some time. Make sure you allow enough time to complete the project.