Lockouts · Markham
Seized & Jammed Lock Opening
The old mortise lock on the front door of the house turns the key halfway and stops with a dull clunk.
In plain words
The visit runs in a set order. On the phone you describe what the key does: refuses to turn, spins freely, or works only when the door is pushed. That description tells the locksmith what to bring. At the door, identification and your connection to the property are confirmed. The key, keyway, door fit and strike are examined before anything is forced. The opening uses the least disruptive method the condition allows. Then the failed part is serviced or replaced, the door is adjusted if it caused the jam, and the lock is tested open and closed with every key before the locksmith leaves.
How the visit goesThe lock works, but only if you lean on the door with your hip while turning the key. After a week of humid weather the bolt is jammed against the strike plate, and without that push the key stops halfway.
Seized & Jammed Lock Opening
How the visit goes
Levers, thumb-turns and mortise cases
Lever handles and mortise locks add parts that a plain deadbolt does not have, and each can jam on its own. A lever that drops without retracting the latch can have a tired return spring or a worn hub inside the case, though latch engagement, linkage, or the spindle can produce the same symptom. A thumb-turn that will not move can be a bent spindle, a stripped drive or a bolt pinned by the frame. On older houses and commercial doors the mortise case itself may be packed with decades of dust and dried grease. The locksmith works the lever, key and thumb-turn separately and feels where resistance starts, which locates the fault before the case is opened.
Inside a mortise case or lever set
For mortise locks and lever hardware the work moves from the cylinder to the case. The locksmith gets the door open, then removes the trim and draws the case out of the door edge. Inside, a broken lever return spring, a worn hub, a bent spindle or a latch that has lost its spring is replaced with the matching part, and years of dust and hardened grease are cleaned from the contact surfaces before a fresh application of a grease suited to lock mechanisms. The case is reassembled, the spindle and cylinder are refitted, and lever, key and thumb-turn are each tested so the latch and bolt travel fully.
A door that closes without a fight
If the door was the cause, the hinges, strike and seal have been set so the bolt has room. Keeping it that way is a seasonal habit: each spring and fall, try the lock with the door closed and no pressure on it, and snug the hinge and strike screws if the door has begun to drop. Wood keeps moving with humidity, so a door that swells in August may need a touch on the strike in September. A door that suddenly needs a push to lock is telling you early, while the fix is still a screwdriver and not a seized bolt.
Seized & Jammed Lock Opening
In the van
Long hinge screws
Penetrating lubricant
Strike plate and hinge shims
Mortise case spring and hub
Electronic contact cleaner
Seized & Jammed Lock Opening
What affects the quote
When the call comes in
An evening, weekend or holiday call for a jammed lock costs the same amount as a weekday one. The locksmith looks at what is actually jammed once on site, and the exact figure follows from that, not from the clock.
Signs of an earlier struggle
A key snapped in the plug, a twisted cylinder or a bent latch from a screwdriver adds an extraction or a repair to the opening, and the locksmith points that out before quoting it.
Ice and salt on the day
A cylinder frozen solid or crusted with salt needs thawing, flushing and drying before it can even be diagnosed, and a winter call is quoted with that time in mind.
What to have ready
- Do you have identification, a lease or a management contact for the property?
- Has anyone sprayed oil or another product into the keyway?
- Is anyone inside, and can the door be opened from that side?
Seized & Jammed Lock Opening: questions
QuestionsWhy is it always the shaded side of the building that seizes?
The face of a building that never sees direct sun stays colder and damper, so ice in a keyway lasts days longer there and condensation sits in the cylinder rather than drying off. Wind-driven rain and snow tend to hit the same face. Those doors deserve a keyhole cover, a storm door where one fits, and a lubricant check before the season turns, and they are often the first lock a locksmith asks about.
The lever on our shop door goes down but the latch does not pull back. Is that a lock problem?
It usually points to the mortise case rather than the cylinder, and it is a common complaint on commercial doors. Inside the case a return spring, a worn hub, or another part of the latch's drive path can have failed, so the lever moves without driving the latch. The locksmith gets the door open, draws the case out of the door edge, replaces the worn part, cleans and greases the contact points and refits everything, then tests lever, key and thumb-turn together.
If the cylinder is replaced, can it be keyed to my existing key?
Often, yes. A replacement cylinder in the same keyway can be pinned to the cuts on the key already on your ring, so the front and back doors stay on one key and nothing else in the house changes. If the old keyway is no longer made or the key is badly worn, the new cylinder comes with fresh keys and the other doors can be rekeyed to match in the same visit.
