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How to Install a Deadbolt and Lockset

If you plan to purchase a door slab instead of a pre-hung door, or if you are adding a lock to a door, follow these steps for installing deadbolts and locksets.
Excerpted from Do It Yourself Home Improvement

More in Windows Walls and Doors

Test Locking Mechanisms on Strike Plate

There are many types, styles and finishes available for door hardware. Some are easier to install than others, and when selecting your new locksets, consider your level of expertise with this type of DIY work. If you require a lockset or special hardware that requires more skill to install, contact a professional for help.

View photo gallery instructions for this project

Step 1: Lay Out the Position

Measure and mark the location for the new lockset on the door slab with a pencil and tape measure (Image 1). Most manufacturers supply a template to aid with layout. Some are meant to be taped to the door; others are used to make marks (Image 2).

Step 2: Drill Holes for Lockset and Deadbolt

Using a hole saw and a drill, make a hole for the lock and deadbolt through the door slab (Image 1). Do not go all of the way through.

Turn the door over and drill the hole from this side to complete the hole for the lockset (Image 2). Repeat for the deadbolt.

The next step is creating a hole for the latch bolt. Drill holes with a spade bit through the side of the door, following the manufacturer's template (Image 3).

Step 3: Install the Deadbolt and Lockset

Insert the latch bolt inside the hole made in Step 2. Trace around the strike plate on the door (Image 1).

Using a utility knife, score the door along the outline (Image 2).

Strike a chisel at intervals within the score lines to create cuts (Image 3). This will make it easier to remove the material.

Using a chisel at less than 45 degrees, remove the material inside the score mark, so that the strike plate can fit flush with the door (Image 4).

Insert the latch bolt in the hole, making sure the strike plate is flush. Attach the latch bolt assemblies with fasteners (Image 5).

Connect the deadbolt face and the lockset handle to the latch assembly according to the manufacturer’s instructions (Image 6).

Step 4: Finish the Lockset

Finish assembling the lockset and deadbolt, using fasteners provided or recommended (Image 1).

Line up the door with the door frame. Make a mark where the top of the latch bolt hits the frame (Image2).

Step 5: Lay Out the Strike Plate

Lay out the strike plates on the door jamb, making sure that the marks are level and plumb, and that the lay-out marks will allow the door to close within the frame. Refer to the manufacturer's directions (Image 1).

Drill the holes into the door frame for the latch bolts to fit (Image 2).

Follow the directions in Step 3 to cut a mortise for the strike plate (Image 3).

Use the template provided by the manufacturer to mark the holes for the fasteners (Image 4).

Place the strike plate in the mortise cut (Image 5).

Using the screws provided, attach the strike plate to the door jamb (Image 6).

Using the lockset strike plate as a guide, mark the location for the fasteners (Image 7).

Drill pilot holes at the marked locations for the fasteners (Image 8).

Place the strike plate inside the mortise cut on the door jamb. Attach the strike plate (Image 9).

Test the locking mechanisms to make sure the strike plates align (Image 10).

Further Information

If your door does not latch well, slowly open and close the door, to see where the latch bolt lands on the door jamb. If the door latches well, the latch bolt will enter the strike plate. If not, check for the following:

  • Hinge screws may be loose. Ensure all fasteners are tightened.
  • The gap between the door and the jamb may be too wide for the latch bolt. You may be able to adjust this with shims. Off-center latching can be fixed by shimming the door in the appropriate direction. If you are unable to fix misalignment with shims, you may need to reset the latch plates.
  • The doors may be warped and causing misalignment. It is possible you will need to purchase and hang a new door.

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Excerpted from Do It Yourself Home Improvement

© Dorling Kindersley Limited 2009

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