Lockouts · New Dundee
Seized & Jammed Lock Opening in New Dundee
The old mortise lock on the front door of the house turns the key halfway and stops with a dull clunk.
In plain words
This service has a season here. The first wet fortnight of winter sends meltwater into keyways that freezes overnight, and doors on the north and shaded sides of a building stay iced the longest. Salt spray from driveways and walkways leaves a crust that thickens with every thaw. Then summer humidity swells wood doors until the bolt drags in its pocket. A jammed lock opening in these conditions means thawing without boiling water, flushing out salt, drying the cylinder, and dressing it with a lubricant that sheds moisture, along with a check of the door so the same weather does not jam it again next month.
How the visit goesThe old mortise lock on the front door of the house turns the key halfway and stops with a dull clunk. It has been getting harder for months, and the brass key is starting to show a bend.
Seized & Jammed Lock Opening
How the visit goes
Which of the three families it belongs to
Every jammed lock falls into one of three groups, and sorting it is the whole diagnosis. A key that enters fully and will not turn points to the cylinder: grit, ice, corrosion, dried lubricant or a plug that has not returned to its neutral position with the shell. A key that turns freely and moves nothing points to the connection behind the cylinder, the tailpiece or cam, or to a broken hub in a mortise case. A key that works only when the door is pushed, pulled or lifted points past the lock entirely to the door and its strike. Each group has its own opening method and its own repair.
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.
Keys that match the lock again
Where a worn or drifted key was part of the jam, you now hold a key cut from the code or from a fresh master, and every spare has been tried in the lock. Retire copies that needed force, and cut future spares from the good key rather than from each other, since each generation of copying adds error. Label the keys if several locks are involved. If the cylinder was replaced and pinned to your existing key, the whole house is still on one key. Keeping a written note of the keyway and, where it exists, the key code makes any future key a simple cut.
Seized & Jammed Lock Opening
In the van
Plug follower and repinning kit
Key blanks and code cutter
Replacement tailpiece or cam
Cylinder springs, pins and cap
Dry PTFE or graphite lock lubricant
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.
The drive to you
Driving time is part of every call, and a property at the end of a long rural road is a different trip from one a few streets over.
Cutting fresh keys
If a worn key was part of the trouble, keys cut from the code or a fresh master are counted individually, so say how many the household or staff need.
What to have ready
- Does the lock work if you push, pull or lift the door while turning the key?
- Which side of the building does the door face, and is it near a salted driveway?
- Does the key go fully in and refuse to turn, or turn without moving the bolt?
Seized & Jammed Lock Opening: questions
QuestionsWhy do locks jam more in winter?
Two reasons meet in the same season. Freeze-thaw weather sends meltwater into the keyway by day and freezes it by night, and cold thickens any old grease or oil that has been sprayed into the pins. At the same time dry, heated indoor air shrinks wood doors so bolts move in their pockets. Doors on the shaded or windward side get the worst of it. A dry lubricant, a keyhole cover and a check of the strike after the first hard frost take care of most of it.
Will I need a whole new lock?
Usually not. Most jammed locks are saved by cleaning the cylinder, fitting a small part such as a tailpiece or spring, or adjusting the door so the bolt has room. A new cylinder is fitted when the plug or shell is corroded through or twisted by forcing, matched to your finish and, where possible, pinned to your current key. A complete new lockset is usually a choice you make rather than a requirement, though some internal failures cannot be serviced in place and call for a full replacement.
Can a seized lock be opened without damaging it?
In most cases, yes. A bolt held by the door is freed by relieving the pressure on the door. A cylinder clogged with grit or ice is cleaned and thawed until it turns. A failed tailpiece is bypassed and replaced. The lock stays on the door with its finish and your existing keys. A plug or shell that is worn, damaged, or eaten through by corrosion or earlier forcing is what has to be replaced, and that is explained before any work starts.
Related services
- Business Lockout ServiceIt is ten to nine, three staff are on the sidewalk with their coffees, and the key that has opened the glass front door for six years will not turn.
- Broken Key ExtractionThat key had been bending a little for years, and you kept straightening it.
- Break-In Damage Lock RepairPolice have come and gone, the occurrence number is on a sticky note, and you are standing in a cold hallway looking at a splintered frame, wondering how the house gets locked before everyone tries to sleep.