A lock that sticks or won't turn is almost always one of three things: a dirty or worn cylinder, a key that's worn down, or a door that's shifted so the latch no longer lines up with the strike plate. Try the key in the lock while the door is open. If it turns smoothly with the door open but binds when it's closed, the problem is alignment, not the lock itself.
Why does my key stick halfway in?
This is usually built-up dirt and old lubricant inside the cylinder. Vancouver's damp winters push grit and moisture into the keyway, and over a few years it turns into a gum that slows the pins down. A dry silicone or graphite spray worked in and then wiped off usually frees it up in minutes.
Don't use WD-40. It's a solvent, not a lubricant, and it washes out the little bit of grease the pins need, then attracts more dust once it evaporates. You'll be back to a sticky lock in a few weeks, sometimes worse than before.
Why won't the key turn at all, even though it fits?
If the key goes in fine but won't rotate, look at these in order:
- Worn key. Keys cut from keys (copies of copies) lose shape over time. Try your spare. If the spare turns easily and the original doesn't, the key is the problem, not the lock.
- Worn or broken cylinder pins. Years of use wear the pins and springs inside. The key fits but the pins won't line up to let the plug rotate. This needs the cylinder replaced, not lubricated.
- Latch bolt binding against the frame. If the door has swelled or sagged, the latch is under pressure from the frame, which can jam the whole mechanism so the key won't turn until that pressure is released.
Could it be the door, not the lock?
In older Vancouver character homes and anything with a wood frame, this is common. Wood doors swell in wet weather and shrink when the heat comes on in October, and that shifts the latch alignment by a few millimetres, which is enough to bind a deadbolt. Hinges loosen over years of use too, letting the door drop slightly on its frame.
You can test this by loosening the deadbolt strike plate screws a quarter turn and seeing if the key turns easier. If it does, the fix is adjusting the strike plate position, not the lock. We've covered this in more detail in why your strike plate matters more than your lock, since a misaligned strike plate causes more lock problems than people expect.
What if the lock has frozen or feels stiff in cold weather?
Vancouver doesn't get the deep freezes that lock up cylinders solid, but a cold snap combined with moisture inside the lock can still make a deadbolt feel stiff and sluggish, usually on exterior doors facing the weather. Warming the key slightly with your hand before inserting it can help in a pinch. For a longer fix, dry the cylinder out and re-lubricate with graphite once the weather breaks.
When does it make sense to just replace the lock?
If the cylinder is more than 10 to 15 years old, has visible rust on the pins, or has been sticking on and off for months despite lubrication, replacing it is usually cheaper in the long run than repeated service calls. A standard deadbolt cylinder swap typically runs in the range of 120 to 180 dollars including labour, and takes 30 to 45 minutes on site. A simple lubrication and adjustment visit is usually in the 80 to 120 dollar range and takes 15 to 30 minutes, though costs vary with the lock brand and how much disassembly it needs.
One caution: if a key has snapped off inside the cylinder while you were forcing it, don't keep turning or prying at it. Forcing a broken key further in can damage the pins and push fragments deeper, which turns a simple extraction into a full cylinder replacement.
Call for help or fix it yourself?
Lubricating a sticky lock or adjusting a strike plate is a reasonable DIY job if you've got a screwdriver and ten minutes. If the key won't turn at all, the cylinder is rusted, or a key has broken off inside, that's a job for a locksmith rather than more force. Have your key, a close-up photo of the lock brand stamped on the faceplate, and a sense of how old the door hardware is ready when you call Fast Locksmith Vancouver, it helps us bring the right parts the first time.
Frequently asked questions
Can I fix a sticking lock myself without calling a locksmith?
Yes, for simple cases. Graphite or dry silicone lubricant worked into the keyway, plus checking the strike plate alignment, solves most sticking locks without any tools beyond a screwdriver.
Is it bad to force a key that won't turn?
Yes. Forcing it risks snapping the key inside the cylinder or bending the pins, which turns an easy fix into a cylinder replacement. If gentle pressure plus wiggling doesn't work, stop and check the strike plate alignment instead.
How long does a lock cylinder replacement take?
A standard residential deadbolt cylinder swap usually takes 30 to 45 minutes on site, assuming the door and frame are in reasonable shape and no drilling is needed.