
Change or rekey · Merritton
Vintage Mortise Lock Service in Merritton
The old skeleton key still fits the keyhole, but it now needs a jiggle, a lean on the door and a little luck before the bolt moves. Last week it took three tries.
Call now · open 24/7(289) 432-1115In plain words
Interior doors are as much a part of this work as the entry. Bedroom, bathroom and closet doors in an older home usually carry a lighter mortise latch with a privacy turn button, and after decades without lubrication they stop catching or the turn button seizes. These small cases are short jobs on the bench: a clean, a spring, a new turn button spindle where the old one has sheared. Sets of interior locks are often serviced in one visit, and a bit key can be cut that operates all of them, which is how they were originally supplied when the house was built.
How the visit goesThe knob flops loose on its spindle and never springs back to level. When you turn it the latch pulls in, but you have to push the knob back yourself, and lately the latch has started staying inside the door instead of catching.
Vintage Mortise Lock Service · Merritton
How the visit goes

- 1
The door before the lock
Before blaming a lock that may be perfectly sound, the locksmith looks at the door. With it open, the lock is cycled; with it closed, the latch and deadbolt are tried again. A lock that works open and fights when shut is telling you the door has moved. The gap around the door is checked top to bottom, the hinges are watched for a sag when the door is lifted, and the strike plate is inspected for bright wear marks where the bolt has been scraping past. In an older home with a solid wood door this is a routine finding, and correcting it is often most of the repair.
- 2
Taking the lock out without marking the door
Removal is done in a set order so nothing is forced. The knob set screws are backed off and the knobs and spindle drawn out, then the escutcheons are lifted away, their screw positions photographed for reassembly. On a cylinder lock, the small set screw in the faceplate is released and the cylinder is unthreaded from the case. The faceplate screws come out, and the case is eased from its pocket with a gentle rock, never a pry bar, because the wood at the edge of an old door is thin. Everything that comes off is bagged and labelled, and the pocket is looked at while it is empty.
- 3
Keys that fit the lock, and a spare
You are handed keys made to the restored lock, counted into your hand, and each one is tried in the door before the locksmith drives away. For a bit-key lock that means keys filed to your case; copying one needs the right blanks and equipment, which most hardware counters do not stock, so the locksmith keeps the record needed to make more. For a cylinder lock it means keys cut to the new combination, with any old keys now useless. Keep one spare somewhere other than the door, ideally with a neighbour or in a lockbox, and treat bit keys gently: they bend in a pocket and a bent key is how most of these locks become stiff again.
In the van
- Cylinder set screw
- Mortise cylinder and cam
- Reproduction mortise case
- Bit key blanks
- Dry graphite or PTFE lubricant
What affects the quote
- 1
Missing or mismatched trim
Sourcing a knob, escutcheon or thumb-turn to match the survivors, from salvage or reproduction stock, is quoted as parts plus the search. Reusing your own trim from another door avoids that line.
- 2
Keying doors alike
Bringing several interior locks onto one bit key, or several cylinders onto one flat key, is extra bench work per lock and is simplest to arrange while all the cases are out on the same visit.
- 3
Replacement cylinder
When a pin-tumbler cylinder is past rekeying, a new mortise cylinder of the right thread and cam is fitted. A standard cylinder and a high-security one are different hardware and are quoted as such.
Same fees day, night or weekend.
Vintage Mortise Lock Service: questions
What do I get at the end of the visit?
A lock you have tested yourself from both sides, keys counted into your hand with a spare, any parts that were removed if you want them, and a short written note of what was done: case type, parts replaced, keys made, strike adjusted. For a bit-key lock the locksmith keeps the details needed to cut further keys later. You also get shown where the yearly drop of oil goes.
Can my interior doors be serviced too, and can one key work all of them?
Usually yes to the first, and to the second once the locksmith checks the locks. Interior mortise latches with privacy turn buttons are lighter versions of the entry lock and respond to the same clean and re-spring. Interior locks in a house were sometimes supplied to one bit key, and where the key sections, warding and levers actually match, the locksmith can restore that arrangement so a single key opens several bedroom and bathroom doors. It is a practical thing to have when a child locks a bathroom from inside.
What information helps before you come out?
Whether the door takes a skeleton-style bit key or a flat key in a round cylinder, roughly when the house was built, what the knob and bolt are doing, and whether the trouble is worse with the door closed. A photo of the faceplate in the door edge and one of the keyhole side is worth a great deal. Mention how many doors are involved and how many keys you would like afterwards.
Vintage Mortise Lock Service near you
Niagara, Ontario
Merritton information
- Town
- Merritton, Niagara, Ontario
- In business
- 12 years
- Hours
- Open 24/7 · nights, weekends and holidays, same fees
- Phone
- (289) 432-1115
- Visits
- On-site assessment preferred. Request a visit or call.
What the census means at the door
71%
Older homes. About 71% of homes in St. Catharines were built in 1980 or earlier, according to the 2021 Census.
Older doors are usually thicker and made of solid wood, which is good news. They take a deadbolt well, hold longer strike screws, and reward reinforcement. The locksmith measures the thickness and backset so new hardware fits without fresh holes.
56%
A mix of homes. Single-detached houses make up about 56% of homes in St. Catharines (2021 Census).
In a mixed area, a locksmith's advice bends to the building. For a house, the side door and garage entry get attention. For an apartment, the suite door's closer, strike and viewer do. The principle is the same: look at how the door is actually used.
Nearby
Open 24/7
Request a visit
The old skeleton key still fits the keyhole, but it now needs a jiggle, a lean on the door and a little luck before the bolt moves.
Call now · open 24/7(289) 432-1115- On-site assessment preferred
- Same fees day, night or weekend
- 12 years in business




