

Lockouts · Mississauga
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 shop's lever handle goes down as usual, but the latch inside the mortise case never pulls back. Staff are waiting on the sidewalk with their coffees, the door is locked, and the handle is simply moving air.
Seized & Jammed Lock Opening
How the visit goes


Loading the door while the key is worked
With the lock family narrowed, the locksmith puts a hand on the door. Pushing it into the frame, pulling it out, and lifting on the handle each change how a bound bolt sits in its pocket, and the key is tried gently in each position. If the key frees up under one of those loads, the door is the cause. Where a second entrance is open, the same lock family is compared with the door swung wide, since a bolt that throws smoothly in mid-air and binds when closed has been pinched by the frame. Nothing is forced during this test; it is a diagnosis, not an attempt.
Stripping and rebuilding the cylinder on the bench
With access restored, a cylinder that seized gets a proper service. The locksmith removes it from the door, slides the plug out with a follower so the top pins and springs stay put, and lays out the pin stacks. Everything is cleaned, worn bottom pins and tired springs are replaced, and any burr on the plug is dressed. The plug is reassembled to the same combination so your existing keys keep working, then lubricated with the product that cylinder's maker specifies and cycled until it turns with a fingertip. If the key that jammed was worn, a fresh one is cut from the code rather than from that key.
For a business: a door the staff can rely on
On a commercial door the handover includes the people who use it. Whoever opens in the morning is shown how the lever, key and cylinder now behave, and the exit side is demonstrated so everyone knows the door opens from inside with one motion. If the mortise case was serviced, the parts that were replaced are named so a future locksmith knows what is in there. A note of which keys were tested and who holds them supports whatever key control the business runs. Spare keys are checked in the lock before they go back in the safe.
Seized & Jammed Lock Opening
In the van
Replacement tailpiece or cam
Lock de-icer
Key blanks and code cutter
Penetrating lubricant
Strike plate and hinge shims

Seized & Jammed Lock Opening
What affects the quote
Door and hinge adjustment
When the door caused the jam, hinge screws, shims, a strike move or a deepened bolt pocket are quoted as their own line beside the opening.
Which part is jammed
A bolt pinned by the door, a cylinder clogged with grit and a broken tailpiece are three different jobs with three different amounts of work, and the quote follows the diagnosis rather than the symptom.
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.
What to have ready
- What kind of lock is it: deadbolt, knob, lever, mortise or keypad?
- Do you have a spare or original key you could try?
- Does the lock work if you push, pull or lift the door while turning the key?
Seized & Jammed Lock Opening: questions
QuestionsIf 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.
What should I tell you on the phone?
Say what the key does: refuses to turn, spins without effect, or works only when the door is pushed or pulled. Name the lock type if you can, whether it is a deadbolt, knob, lever or an old mortise lock, and which side of the building the door faces. Mention recent weather, any spray that went into the keyway, any other door you can use, and whether anyone is inside. That short list decides the tools that come.
My keypad deadbolt is jammed and the motor just whirs. Is that the same service?
Yes, with one difference. On an electronic deadbolt the motor is trying to throw a bolt that is bound in the strike, and it strains or times out instead of driving it. Door alignment is a common cause, though batteries, corrosion, an overtightened mounting bolt, or a hardware fault can produce the same strain. The locksmith frees the bolt, adjusts the strike or hinges so it travels without resistance, checks the battery contacts, and confirms the auto-lock throws cleanly with the door closed.
Related services

- Business Lockout ServiceAfter last night's power flicker the card reader beside the clinic door shows nothing.
- Broken Key ExtractionThe key went in like any other morning, you turned it, and something gave with a small metallic click.
- Break-In Damage Lock RepairThe shop's aluminum door has a bent meeting stile and the hookbolt is jammed half out.