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Putting In A Deadbolt

By Ashley

May 8, 2025

3 min read

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Putting In A Deadbolt

Securing your home is a top priority for many homeowners, and one of the most effective ways to enhance your home's security is by installing a deadbolt. A deadbolt is a type of lock that provides an additional layer of security by requiring a key or thumb turn to unlock it. Unlike spring bolt locks, deadbolts cannot be easily forced open with a credit card or other simple tools. This makes them an excellent choice for both exterior and interior doors. In this guide, we will walk you through the process of putting in a deadbolt, from selecting the right type of deadbolt to installing it correctly.

Table of Contents

Choosing the Right Deadbolt

Before you begin the installation process, it's crucial to select the right type of deadbolt for your needs. There are several types of deadbolts available, each with its own set of features and benefits. Here are some of the most common types:

Single-Cylinder Deadbolts: These are the most common type of deadbolt and are operated with a key from the outside and a thumb turn from the inside.
Double-Cylinder Deadbolts: These require a key to unlock from both the inside and the outside, providing an extra layer of security but can be inconvenient in case of an emergency.
Keyless Deadbolts: These use a keypad or fingerprint scanner instead of a key, offering convenience and enhanced security.
Smart Deadbolts: These can be controlled remotely via a smartphone app, allowing you to lock and unlock your door from anywhere.

When selecting a deadbolt, consider factors such as the level of security you need, your budget, and any specific features you require. For most homeowners, a single-cylinder deadbolt is a good starting point.

Gathering the Necessary Tools

Before you begin putting in a deadbolt, make sure you have all the necessary tools and materials on hand. Here's a list of what you'll need:

Deadbolt lock set
Tape measure
Pencil
Drill with a 1-inch spade bit and a 2-1/8-inch hole saw
Screwdriver (Phillips or flathead, depending on your deadbolt)
Chisel
Hammer
Level
Wood shims (optional)

Having all these tools ready will make the installation process smoother and more efficient.

Measuring and Marking the Door

Accurate measurements are crucial for a successful deadbolt installation. Follow these steps to measure and mark your door:

Measure the thickness of your door. Most doors are either 1-3/8 inches or 1-3/4 inches thick. Ensure your deadbolt is compatible with your door thickness.
Measure the distance from the edge of the door to the center of the existing doorknob. This is typically around 2-3/8 inches to 2-3/4 inches. Mark this measurement on the edge of the door where the deadbolt will be installed.
Using a pencil, mark the center of the deadbolt on the edge of the door. This will be the point where you drill the hole for the deadbolt.
Mark the location for the latch plate on the door frame. This is usually aligned with the center mark on the door edge and should be about 1 inch from the edge of the door frame.

Double-check your measurements to ensure accuracy before proceeding to the next step.

Drilling the Holes

With your measurements and marks in place, it's time to drill the holes for the deadbolt. Follow these steps carefully:

Using a 1-inch spade bit, drill a hole through the edge of the door at the center mark. This hole should be deep enough to accommodate the deadbolt latch.
Using a 2-1/8-inch hole saw, drill a hole through the door at the location marked for the deadbolt cylinder. This hole should be centered on the mark and deep enough to accommodate the deadbolt cylinder.
Drill a hole through the door frame at the location marked for the latch plate. This hole should be the same size as the latch plate and should be aligned with the hole drilled in the door.

After drilling, use a chisel and hammer to create a mortise (a recessed area) for the latch plate in the door frame. This will ensure that the latch plate sits flush with the door frame.

🛠️ Note: Be careful when drilling to avoid splitting the door or door frame. Use a slower drill speed and apply steady pressure.

Installing the Deadbolt

Now that the holes are drilled, you can proceed with installing the deadbolt. Follow these steps:

Insert the deadbolt latch into the hole drilled in the edge of the door. Secure it in place with the provided screws.
Insert the deadbolt cylinder through the hole drilled in the door. Align the cylinder with the latch and secure it in place with the provided screws.
Attach the interior and exterior trim plates to the deadbolt cylinder. Ensure that the trim plates are aligned and secure them with the provided screws.
Insert the latch plate into the mortise in the door frame and secure it with the provided screws.
Test the deadbolt by locking and unlocking it to ensure it operates smoothly.

If the deadbolt does not operate smoothly, check for any obstructions or misalignments and adjust as necessary.

Testing the Deadbolt

After installing the deadbolt, it's essential to test it thoroughly to ensure it functions correctly. Here are some steps to follow:

Lock and unlock the deadbolt several times to ensure it operates smoothly.
Check the alignment of the latch and the strike plate to ensure they are properly aligned.
Test the deadbolt from both the inside and the outside to ensure it locks and unlocks correctly.
If you have a double-cylinder deadbolt, test it with the key from both sides.

If you encounter any issues, double-check your installation steps and make any necessary adjustments.

Additional Security Measures

While putting in a deadbolt significantly enhances your home's security, there are additional measures you can take to further protect your property. Consider the following:

Reinforce the Door Frame: Strengthen the door frame with metal plates or longer screws to prevent it from being kicked in.
Install a Strike Plate: A reinforced strike plate can help prevent the door from being forced open.
Use Security Screens: Install security screens on windows and doors to add an extra layer of protection.
Consider a Smart Lock: Smart locks offer remote access and monitoring, allowing you to control your door locks from anywhere.

By implementing these additional security measures, you can create a more secure environment for your home.

Maintaining Your Deadbolt

Regular maintenance is essential to ensure your deadbolt continues to function correctly and provide the necessary security. Here are some tips for maintaining your deadbolt:

Lubricate the deadbolt mechanism periodically with a silicone-based lubricant to keep it operating smoothly.
Check the alignment of the latch and strike plate regularly to ensure they are properly aligned.
Inspect the deadbolt for any signs of wear or damage and replace it if necessary.
Keep the deadbolt clean and free of debris to prevent it from becoming stuck or difficult to operate.

By following these maintenance tips, you can extend the lifespan of your deadbolt and ensure it continues to provide reliable security.

Putting in a deadbolt is a straightforward process that can significantly enhance your home’s security. By selecting the right type of deadbolt, gathering the necessary tools, and following the installation steps carefully, you can ensure a successful installation. Regular maintenance and additional security measures can further protect your property and provide peace of mind.

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