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Your home’s locks are one of the most important elements of security, yet they often go overlooked when it comes to maintenance.

Many homeowners assume that once a lock is installed, it will last indefinitely—until one day, they find themselves locked out due to a malfunctioning or broken lock. Just like any other mechanical component, locks need proper care and upkeep to function well for years to come.

 The good news is that with a few simple maintenance habits, you can extend the life of your locks and ensure your home remains secure. Let’s take a closer look.

Choose High-Quality Locks

The first step in prolonging the life of your locks is to invest in high-quality locks from the start. While cheaper locks may save you money upfront, they often wear out faster due to lower-quality materials and poor construction.

Look for locks made of solid brass, stainless steel, or bronze, as these materials are more resistant to corrosion and wear. Reputable brands such as Schlage, Medeco, and Kwikset offer durable locks that provide long-lasting security. When selecting a lock, consider the ANSI/BHMA grading system:

• Grade 1: Best security, most durable (ideal for exterior doors)
• Grade 2: Good security, suitable for residential use
• Grade 3: Basic security, may wear out faster

Opting for a Grade 1 or 2 lock ensures better longevity and security for your home.

Keep Your Locks Clean And Lubricated

Dirt, dust, and grime can accumulate inside your locks over time, causing them to become sticky or difficult to turn. Regular cleaning can help prevent this.

• Use compressed air to blow out dust and debris from the keyhole every few months.
• Wipe the exterior of the lock with a damp cloth to remove dirt and residue.
• Avoid using oil-based lubricants like WD-40 inside the lock, as they can attract dust and gum up the mechanism over time. Instead, use a graphite lubricant or silicone spray, which keeps the pins and tumblers moving smoothly without attracting dirt.

Avoid Excessive Force On Locks And Keys

Forcing a key into a lock or turning it too hard can cause internal components to wear out or break. If you notice resistance when turning the key, do not force it. Instead:

• Check if the key is bent or damaged; if so, replace it with a duplicate.
• Lubricate the lock to see if that improves functionality.
• If the lock is still stiff, it may be misaligned, requiring adjustment of the strike plate or latch.

Additionally, avoid using the key to pull a door closed—this can put unnecessary strain on the lock and weaken its internal mechanism.

Duplicate Keys Correctly

Over time, keys wear down, and worn-out keys can damage the lock’s internal pins and tumblers. If you need a duplicate key, always make a copy from the original key rather than from an already duplicated one. Each duplication slightly changes the shape of the key, and repeated copying can result in a poor fit that wears down the lock faster.

When making a copy, use a high-quality key-cutting service to ensure precision.

Address Rust And Corrosion Early

Rust and corrosion can cause locks to seize up and become unusable. If you live in a humid or coastal area, your locks are particularly vulnerable.

• Use rust-resistant locks if you live in a high-moisture environment.
• Apply a thin layer of silicone-based lubricant to create a protective barrier.
• If rust appears, use a mixture of vinegar and baking soda to remove it before it spreads.

Regularly inspecting your locks for early signs of rust can prevent them from deteriorating completely.

Ensure Proper Door Alignment

A misaligned door can put pressure on the lock, making it difficult to latch or turn the key. Over time, this pressure can cause internal damage to the lock mechanism. Signs of a misaligned door include:

• The door not closing properly without extra force.
• The deadbolt not sliding smoothly into the strike plate.
• A gap between the door and the frame that seems uneven.

To fix a misaligned door, you may need to adjust the hinges, strike plate, or weatherstripping to ensure the lock functions without added stress.

Protect Locks From Extreme Weather

Weather plays a huge role in lock longevity. Freezing temperatures can cause locks to seize up, while excessive heat can cause metal to expand and misalign.

• In cold weather, use a de-icing solution or a heated key to prevent freezing.
• In hot weather, avoid oil-based lubricants that may thicken and cause sticking.
• Install weather-resistant covers on exterior locks to shield them from rain and snow.

Consider Upgrading To Smart Locks

If you frequently experience lock issues due to wear and tear, consider upgrading to a smart lock.

These locks eliminate the need for physical keys, reducing the risk of damage from key friction. Many smart locks are also weather-resistant and self-lubricating, making them a low-maintenance alternative.

Know When To Replace A Lock

Even with proper maintenance, locks don’t last forever. Most high-quality locks last 7-10 years, depending on usage and exposure to the elements. If you experience any of the following, it may be time to replace your lock:

• The key regularly gets stuck or doesn’t turn smoothly.
• There is visible rust, corrosion, or other damage.
• The lock mechanism feels loose or wobbly.
• Your lock no longer aligns properly with the strike plate.

Upgrading to a new, high-security lock can restore your home’s security and eliminate the frustration of a failing lock.

Make Sure To Look After Your Locks!

Taking care of your locks is an easy but essential part of home security. By choosing high-quality locks, keeping them clean and lubricated, avoiding unnecessary strain, and protecting them from harsh weather, you can extend their lifespan and avoid unexpected lock failures.

A little maintenance goes a long way in keeping your locks functioning smoothly, ensuring your home stays secure for years to come.