Common Reasons Why Locks Stick
Here are the most frequent culprits behind a sticky lock:
1. Dirt and Debris Inside the Lock Cylinder
Over time, dust, lint, or even metal shavings can collect inside the lock’s internal mechanism, making it hard to insert or turn your key.
2. Weather Effects and Rust
Moisture—especially during Canadian winters—can cause corrosion or freezing. Outdoor locks exposed to temperature swings often suffer from internal rust buildup or stiff movement due to contracting metal parts.
3. Worn-Out Keys or Misalignment
If the key is bent or worn down, it might not engage the pins properly. Similarly, if your door has shifted due to settling or weather, the lock and strike plate may no longer align, increasing friction when turning the key.
4. Lack of Lubrication
Dry, squeaky locks are prone to jamming. Locks need lubrication to keep the internal pins, springs, and mechanisms moving smoothly.
How to Fix a Sticky Lock Safely
Before breaking out the toolbox—or worse, the WD-40—follow these safe and effective steps:
1. Use Graphite Lubricant or Dry Teflon Spray
Avoid oil-based sprays, as they attract dust and dirt. Instead, insert a puff of powdered graphite or a lock-safe Teflon spray into the keyhole. Wiggle the key in and out a few times to spread the lubricant.
2. Check and Clean the Key
Sometimes it’s not the lock—it’s the key. Try a spare key to rule out key wear. Clean the key with rubbing alcohol to remove grime or residue that might be jamming the mechanism.
3. Tighten Screws and Check Alignment
Open the door and test the lock while it’s not engaged with the strike plate. If it works better this way, your lock might be misaligned. Tighten the hinge screws or adjust the strike plate position if needed.
4. Warm Up Frozen Locks
In winter, gently heating the key with a lighter and inserting it slowly can melt internal ice. Never pour hot water into the lock—it can refreeze and worsen the issue.
When to Call a Professional Locksmith
If your lock continues to stick after cleaning and lubrication, the internal pins or tumblers might be damaged. This is where a trained locksmith comes in. Don’t force the key—it might snap and make things worse.
Need Help from a Pro? Contact Maple Leaf Locksmith
Sticky lock giving you trouble? Whether it’s minor maintenance or a sign that a bigger issue is brewing, Maple Leaf Locksmith provides trusted service across Toronto and the GTA. From jammed locks and rekeying to full lock replacements, we’ve got your security covered.
📞 Call us today at +1 (647) 323-3297 or visit our website to schedule a service. Maple Leaf Locksmith – Unlocking peace of mind, one door at a time.
