Skip to content

How to Install a New Door Lock

This article is a collaborative effort, crafted and edited by a team of dedicated professionals.

Contributors: Muhammad Baballe Ahmad, Mehmet Cavas, Sudhir Chitnis, and Zhen-ya Liu.

✓ Verified & Tested Information

A new door lock can add both security and peace of mind to your home. Here’s a quick and easy guide to help you install a new door lock.

Tools and Supplies

When it comes to replacing a door lock, the tools and supplies you’ll need can vary depending on the type of lock you’re installing. Generally, you’ll need a drill, various drill bits, a screwdriver, and the new door lock. You may also need a hammer, adjustable wrench, and a level, depending on the specific installation. Let’s go over the supplies you’ll need for common door lock installations.

Gather the necessary tools and supplies

Before you start the installation process for your new door lock, it is essential to assemble the necessary tools and supplies. Depending on the type of lock you’ve chosen, this may include: a drill, a screwdriver, work gloves, a level, a chisel or gouge tool (for mortise locks), and mounting hardware. Additionally, make sure that you have all parts necessary to assemble your new lock set before you begin your project. It is also recommended that you measure both the door itself and the existing hardware before purchasing a new lock to ensure accuracy.

Measure the door to determine the size of the lock

Before selecting and installing a door lock, it is important to measure the door. A variety of door locks are available in different sizes that fit various types of doors. Most hardware stores carry an array of locks and can provide advice on what size and type might work best for your home.

In most cases, measuring the door involves taking two readings: width and thickness. For the width, take a measurement from the side jamb to the middle of the strike jamb on both sides. For thickness, measure from the top edge at each side down to where it meets the jamb, along with any variations in between them (known as jamb irregularity). Generally, a standard 1-3/4″ or 2-1/4″ backset will fit; however, some older homes have irregular measurements that require special fittings. It is always best to double-check your measurements before buying a new lock.

When measuring older doors, particular attention needs to be given to other components such as mortise boxes or faceplates that may be attached in order to ensure they fit correctly when installing your new lock. Measuring all parts accurately can help make sure you purchase one that fits properly and provides optimal security for your home.

Removing the Old Lock

Installing a new door lock is not a difficult task but it is important to make sure you remove the old lock properly. The first step is to remove the lock using a screwdriver and if necessary any additional hardware like hinges. Then you will need to remove any screws or latches that are holding the lock in place. Make sure that all the screws, nuts and bolts are saved in a safe place as you will need them to install the new lock.

Remove the screws from the door

Before you can install a new door lock, the old lock must be removed. To begin, locate the two screws on the side of the door with an electric or manual screwdriver. Carefully loosen and remove the screws which will release the latch and round plate from the door. If you are having difficulty removing either of these parts, it might be helpful to spray a lubricant like WD-40 onto them first to allow for easier removal. Be aware that some locks use a special type of screw that requires a unique tool such as an allen wrench; make sure you have the appropriate tools. Once you’ve removed all of the screws and components from your old lock, store them in a safe place for later disposal.

Remove the old lock from the door

When installing a new door lock, the first step is to remove the existing one from the door. Make sure the door is securely closed before taking hold of both sides of the lock and gently turning the lock until it comes away from the edge of the door. You may need to use a pair of pliers to loosen any screws located on the exterior of the lock or handle. Once these screws have been removed, smooth down any jagged edges with sandpaper or a file before installing your new lock. To ensure your security, remember to turn the lock regularly..

Installing the New Lock

Installing a new door lock is a relatively simple process, but it’s important to make sure that you have all the necessary tools and supplies before you begin. You’ll need a drill, a screwdriver, the correct screws for your door and the new door lock. It’s best to double-check the instructions and make sure you have the correct screws for the job before you begin. This article will guide you step-by-step through the process of installing a new door lock.

Align the new lock with the door

Once the existing door lock has been removed, the next step is to align the new lock with the door. Before attempting this, make sure to double-check that all of the components included in your specific lock model have been included. Typically, these will include screws for mounting and attaching the pieces of hardware, as well as a strike plate and latch assembly.

When aligning your new lock with the door opening, it is important to consider how it will impact any blind spots or gaps from which intruders may be able to access your home. Ensure that you fully understand how all of your components fit together before proceeding so that you can properly secure your property from potential harm.

Begin by measuring and marking where each component should be placed on both sides of the door frame before drilling pilot holes into each marked area. Make sure not to drill too deep while drilling pilot holes and to never use a drill bit that is bigger than recommended in order for all pieces of hardware to sit properly in their respective places. Once pilot holes are drilled into the wood frame, attach any anchors if specified by instructions with a screwdriver or power drill before affixing any mountable pieces of hardware using screws provided or purchased separately.

Finally, insert any plastic or metal strike plates into their slots and adjust as necessary so they fit tightly without play when they come into contact with moving parts such as knobs or levers during normal operation when opening/closing doors. Lastly, test out your installation by trying out all aspects of the new lock system including deadbolts and keyed locks before finishing up on ensuring additional security measures such as pin locks are set up effectively.

Secure the lock with the screws

Once the installation is complete, use two flat-head screws to secure the lock in place. To ensure that these screws are permanently installed, use a screwdriver to firmly tighten them into the door. Make sure to tighten them until they are flush against the door frame. Once you have securely tightened both screws, your lock should be fully secured into your door.

You will also want to check the operation of your lock with a key or other turning element before you finish installing it. Insert a key or other turning element into your lock and turn it several times to make sure that it operates correctly and that you can easily open and close the door with your new lock in place. If it turns smoothly and functions properly, then you have successfully installed your new lock and can now use it every day!

Finishing Up

Once you have finished installing the new door lock, it’s important to properly test it out. Start by testing the door from the outside first, making sure it’s properly secure. Then move on to the inside of the door, testing the Door Knob and making sure it’s working properly. After that, check that the key is secured in the lock and that it can’t easily be pushed out. Lastly, make sure the lockset is properly aligned with the door frame and that the Door Knob is functioning correctly.

Test the lock to ensure it is working properly

Testing the door lock is the final step of installing a new lock. Before doing so, it is important to ensure that all components of the lock have been put together properly. Once this is done, check the key fits smoothly in both directions and then close the door to ensure that it opens with minimal effort and locks securely. If necessary, adjust screws on the strike plate and latch bolt until the door closes tightly. To test further, use a flat head screwdriver to disengage the latch by pushing out on one side and pulling out on other side before opening or closing the door to gauge if all components work properly before installing a new lock. After you’re satisfied with its performance, your new door lock installation is complete!

Replace the door trim and secure it with screws

Once you have the door lock installed, it’s time to put the door trim back in place. Begin by sliding the door trim over the latch plate and bottom plate. Make sure it’s snug against them and then start driving in screws. Make sure that you’re screwing into a secure spot on the door frame to ensure that the trim stays securely fastened. Then cover up any exposed screw heads with screws caps or putty factor filler to keep them looking neat and tidy. Finally, test out your new lock one more time and make sure it’s functioning correctly before finishing up with any additional decorations or projects.

How to Install a New Door LockCheckout this video:

Share this Article