How to Lubricate a Sticking Lock
Few things are more frustrating than struggling to turn a key in your own lock. A sticking lock can be caused by dirt, dust, rust, or even seasonal temperature changes that cause metal parts to expand or contract. Over time, this extra resistance can wear down your key, damage the lock mechanism, and eventually cause the key to break inside the lock. Fortunately, lubricating your lock is an easy maintenance task that can keep it working smoothly for years.
Why Locks Get Stiff or Sticky
Locks are exposed to the elements and daily use, which means debris, moisture, and tiny metal shavings from keys can accumulate inside the cylinder. If left unchecked, this buildup can cause pins and springs to move sluggishly—or not at all. Cold weather can also make lubrication more important, as freezing moisture in a lock can cause it to seize. A dusty environment like we have in Utah can also make lubrication more important, as dust dries and binds up the locks.
Choosing the Right Lubricant
Many people reach for WD-40 out of habit, but oil-based products can actually attract more dust and dirt over time, making the problem worse. For best results:
Sprays designed for locks – like Houdini and Triflow work well. They don’t leave a residue behind. Can be found from a locksmith and some hardware stores.
Silicone spray – A good choice for exterior locks, as it repels moisture and resists temperature extremes.
How to Lubricate Your Lock
Clean Your Key – Dirt on your key will transfer into the lock. Wipe it down first.
Apply the Lubricant – Spray a short, quick burst into the keyhole. Let it sit for about 30 seconds to penetrate the lock mechanism. Be sure to protect eyes from back spray.
Work the Key – Insert and remove the key several times, turning it both ways to spread the lubricant evenly through the pins and cylinder.
Wipe Off Excess – Clean any residue from the lock face to avoid staining doors or attracting dirt.
Preventing Future Lock Problems
Lubricate locks every 6 months, or more often in harsh climates.
Keep keys clean and avoid using damaged keys.
Never force a key—if it sticks, lubricate or call a locksmith.
Final Thoughts
Lubricating your locks is a quick, inexpensive way to extend their life and avoid inconvenient, costly repairs. If lubrication doesn’t help, the problem could be worn parts, a bent key, or internal damage that requires professional service.
At Payson Lock & Key, we provide expert lock maintenance, repairs, and replacements for homes, businesses, and vehicles—keeping your security smooth and reliable.
📞 Need help with a stubborn lock? Call us today for fast, professional service.
