Do Locks Wear Out? Understanding Lock Lifespan and When to Replace Them: Insights from a Lock Replacement Company in the Oak Brook, Illinois Area

When it comes to your locks, many people assume they will last forever. But the truth is that over time, constant use, exposure to the elements, and internal wear can cause locks to degrade, making them less reliable and more vulnerable to tampering.

As a professional lock replacement company in the Oak Brook, Illinois area, Suburban Door Check & Lock Services helps homeowners and businesses identify when locks need to be replaced to maintain security. Below, we are going to explain how long locks last, some of the common causes of wear, and some signs that it’s time to replace them.

How Long Do Locks Typically Last?

Locks are built to withstand years of use, but their lifespan depends on several factors, including material quality, environmental exposure and frequency of use.

• Standard residential door locks: 7–10 years
• High-security deadbolts: 15+ years
• Commercial-grade locks: 10–15 years
• Exterior locks exposed to weather: 5–10 years

Proper care can prolong the life of locks, but failing mechanisms, worn-out keys, and environmental damage can make them less secure over time.

What Causes Locks to Wear Out?

Several factors contribute to lock degradation, making them less effective at protecting a property.

1. Frequent Use and Metal Fatigue

• Locks experience wear and tear with every turn of the key.
• Over time, internal springs weaken, causing the mechanism to stick, jam, or fail.
• High-traffic doors (entryways, offices, rental properties) experience faster lock deterioration.

2. Weather Exposure and Corrosion

• Exterior locks face constant exposure to rain, humidity and freezing temperatures, leading to rust and internal damage.
• Illinois winters can cause locks to freeze and expand, making them difficult to turn or completely inoperable.
• Salt and moisture buildup in coastal or humid environments accelerates corrosion, requiring more frequent replacements.

3. Key Wear and Misalignment

• Worn-out keys no longer fit properly, placing stress on lock pins and tumblers.
• Using incorrect or poorly cut duplicate keys can cause misalignment, making the lock difficult to turn.
• Over time, misaligned locks become harder to operate and eventually fail.

4. Dirt and Debris Buildup Inside the Lock Mechanism

• Locks accumulate dust, grime, and small particles that interfere with their function.
• Over time, dirt buildup causes internal components to stick, making keys harder to turn.
• If lubrication no longer improves performance, a lock replacement may be necessary.

Signs It’s Time to Replace Your Locks

If you notice any of the following signs, it may be time to reach out to a professional lock replacement company in the Oak Brook, Illinois area:

1. The Key No Longer Turns Smoothly

• If a key gets stuck, requires jiggling, or turns with resistance, the lock’s internal components may be worn down.
• Keys should turn smoothly — difficulty in unlocking doors is a clear sign of deterioration.

2. The Lock Mechanism Feels Loose or Wobbly

• A loose lock or doorknob could indicate worn internal components or an issue with the door’s alignment.
• If tightening screws doesn’t fix the issue, a lock replacement is the best long-term solution.

3. The Lock No Longer Latches Properly

• If a door doesn’t fully latch when closed, the lock may be misaligned, worn out, or internally damaged.
• This leaves the door susceptible to forced entry, making replacement necessary for security.

4. Rust or Corrosion is Visible on the Lock

• Rust weakens metal components, making locks easier to break or manipulate.
• If rust is present inside the keyhole or around the exterior of the lock, it’s best to replace it before failure occurs.

5. You’ve Experienced a Break-In Attempt

• If a lock has been tampered with, forced open, or damaged, it should be immediately replaced.
• Even if a break-in attempt was unsuccessful, the lock may have weakened mechanisms that could fail in the future.

Should You Repair or Replace a Failing Lock?

Sometimes, minor lock issues can be repaired, but other times, replacement is the safest option.

• When to Repair – If the lock is still in good condition but has minor issues like loose screws, dirt buildup, or a misaligned strike plate, a locksmith may be able to fix it.
• When to Replace – If the lock is rusted, difficult to turn, constantly jamming, or over 10 years old, replacement is the best option to maintain security.

If repairs are becoming more and more frequent, you may want to consult with your lock replacement company in the Oak Brook, Illinois area about a potential upgrade.

Looking for a Lock Replacement Company in the Oak Brook, Illinois area?

Locks don’t last forever — if your door locks are old, difficult to turn, or show signs of wear, replacing them is the best way to ensure long-term security. Are you ready to meet with a trusted lock replacement company in the Oak Brook, Illinois area that can assess your locks and recommend the best solution? If so, you’ve come to the right place — Suburban Door Check & Lock Services is the company to call. Contact us today at (630) 968-4727 to improve your home’s security.