When it comes to home security, most people think that if they want to change their “locks,” they have to go to the hardware store, buy brand-new deadbolts, and replace the entire handle set. However, there is a faster, more affordable, and equally secure option used by professionals: Rekeying.
In this guide, we’ll break down exactly what rekeying means, how the process works, and how to decide if it’s the right choice for your home.
What is Rekeying?
At its simplest, rekeying a lock is the process of changing the internal components of a lock so that it works with a new key.
The physical lock hardware (the knob or deadbolt) stays on the door, but the old key will no longer turn the lock. Instead, a brand-new key is issued to operate the existing mechanism.
How Does the Rekeying Process Work?
To understand rekeying, you have to understand how a standard pin-tumbler lock works. Inside your lock are several small pins of varying lengths. When you insert the correct key, the “teeth” of the key push these pins up to a specific height (the shear line), allowing the cylinder to turn.
The rekeying process involves:
- Removing the lock cylinder from the door.
- Taking out the old internal pins.
- Replacing them with new pins that match the “bitting” (the shape) of a new key.
- Reassembling the lock.
Once the new pins are in, the old key is rendered useless, and only the new key will function.
Rekeying vs. Replacing: What’s the Difference?
Many homeowners confuse these two terms. Here is the breakdown:
- Rekeying: You keep your current hardware (the style and color of your doorknobs). You only change the internal “code.” This is generally much cheaper.
- Replacing: You remove the entire lock assembly from the door and install a brand-new one. This is necessary if your locks are broken, rusted, or if you want to change the aesthetic (e.g., switching from brass to matte black).
When Should You Rekey Your Locks?
Rekeying is the preferred solution in several common scenarios:
- Moving Into a New Home: You have no idea how many copies of the keys the previous owners, Realtors, or contractors might have. Rekeying ensures you are the only one with access.
- Lost or Stolen Keys: If your keys are missing, rekeying is an immediate way to ensure that anyone who finds them cannot enter your home.
- One-Key Convenience: If you have different keys for the front door, back door, and garage, a locksmith can often rekey all of them to work with a single master key (provided the locks are the same brand).
- A Change in Roommates or Relationships: If someone moves out and you want to ensure they no longer have access to the property.
The Benefits of Rekeying
1. Cost-Effective
Because you aren’t paying for expensive new metal hardware, rekeying is significantly cheaper than replacing locks. You are essentially paying for labor and a few cents’ worth of pins.
2. Speed
A professional locksmith can rekey a standard lock in about 10–15 minutes. It is much faster than drilling new holes or fitting new hardware to a door.
3. Security
Rekeying is just as secure as buying a new lock. Once the internal pins are changed, the old key is 100% ineffective.
Can You Rekey a Lock Yourself?
Yes, you can buy “Rekey Kits” at most hardware stores. However, this requires a steady hand and specific tools (like a plug follower and tweezers). If you lose a spring or a pin during the process, the lock may become unusable. For most people, hiring a locksmith is the safer and more convenient choice to ensure the job is done correctly.
Summary
If your locks are in good physical condition but you want to change who has access to your home, rekeying is the smartest move. It saves money, maintains your home’s aesthetic, and provides the peace of mind that comes with knowing exactly who holds the keys to your castle.
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Confused about what “rekeying” actually means? Discover how rekeying works, how it differs from replacing locks, and why it’s the most cost-effective way to secure your new home.