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Closed mortise lock case with spindle opening, keyhole, latch and deadbolt on a wooden workbench. — Vintage Mortise Lock Service, Mississauga

Change or rekey · Mississauga

Vintage Mortise Lock Service

After a wet summer the entry door sits lower in its frame. The lock works perfectly when the door is open, but with it shut you have to lift the handle and shoulder the door to get the deadbolt to throw.

Call now · open 24/7(289) 805-2659

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In plain words

Servicing the original lock is usually the better choice for an older home, for practical reasons as much as sentimental ones. Cutting a period door for a modern cylindrical lockset means boring a large hole through the stile and leaves the old mortise to be filled; a repaired mortise case avoids all of that. Where the home is a designated heritage property, keeping the hardware may also be what the municipality expects. The service treats the door as something to preserve: minimal disturbance, parts matched to the original, a strike adjusted rather than replaced, and the old lock left running smoothly for decades to come.

Sound familiar?

Someone painted the door years ago without removing the hardware. The faceplate, the strike and the little thumb-turn are all under several coats, the deadbolt scrapes when it moves, and the knob is stiff enough to leave marks on your hand.

How the visit goes

Vintage Mortise Lock Service · Mississauga

How the visit goes

Person in a cap and glasses holding an old mortise lock plate against a bare slot in a wooden door edge.
  1. 1

    Which keys exist and who has them

    The locksmith asks to see every key that goes with the door: the one that works, the ones that used to, and the bag of loose bit keys that came with the house. A worn original is still the most useful pattern for a new key, and a bent one explains why the lock has become temperamental. For a cylinder lock, a lost or stolen key is a reason to rekey while the case is out, and a key that only a former occupant holds is worth retiring. The count of keys wanted afterwards is settled now too, so the spares are cut while the lock is on the bench rather than on a return visit.

  2. 2

    Cutting a bit key to the lock

    For a bit-key lock, keys are made to the case rather than copied from a pattern. A blank with the right bow, shank and bit size is chosen, then the bit is filed by hand to clear the wards inside the case and to lift each lever to the correct height. The key is tried, marked, filed again and tried again until it turns the bolt cleanly from both sides. A second key is made to match while the first is fresh. Where a working original exists, it is used as a guide and the new key is cut to it, and a worn original can itself be gently restored if the customer wants to keep using it.

  3. 3

    How to lubricate it, and how not to

    A serviced mortise case wants very little. Once a year, a single drop of light lock oil into the latch and the bolt from the door edge, with the faceplate screws briefly backed off if needed, keeps the levers gliding. If the lock has a pin-tumbler cylinder, that cylinder gets dry graphite or a PTFE lubricant in the keyway instead, because oil in a cylinder gathers grit and stiffens the pins. General-purpose spray lubricants belong nowhere on this hardware; they flush out the little oil that should stay and leave a film that dust settles into. The locksmith will show you where the drop goes so you are not guessing.

In the van

  • Latch and hub springs
  • Cylinder set screw
  • Deadbolt lever springs
  • Bit key blanks
  • Hub followers and lever packs

What affects the quote

  1. 1

    Replacement case

    A case that is cracked or worn through is replaced with a reproduction or modern mortise case sized to the pocket. The case itself, any trimming of the pocket and the refitting are itemised separately from a repair.

  2. 2

    How many keys you want

    Bit keys are made individually by hand and cylinder keys are cut per copy, so the count you ask for is a line of its own. Decide who in the household needs one before the visit.

  3. 3

    What is actually broken inside

    A clean and new springs is the lightest job. A worn hub, a cracked lever or a part that has to be fabricated to match the original adds bench time, and the assessment names which applies before any of it starts.

Same fees day, night or weekend.

Have it ready

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Vintage Mortise Lock Service: questions

Advice · (289) 805-2659

Will the door look any different afterwards?

Usually not, when the original case is repaired: the same knobs, escutcheons, faceplate and strike go back on in the same positions, and the only visible change is paint or grime cleared from the edges that were catching. A replacement case is chosen to match the pocket so original trim is reused wherever spacing allows, though an occasional case needs a small pocket or fixing change, explained beforehand.

My home is a designated heritage property. Does that change anything?

It reinforces the choice to service rather than replace. Where a property carries a heritage designation, changes affecting listed features can need extra sign-off, and original door hardware is occasionally among those features. A rebuilt mortise case with its original trim is preservation rather than alteration, and the locksmith's written record of what was retained and what was replaced is useful for your file.

Can you make a key for a lock that has none?

Yes. A bit key is cut to the lock rather than copied from another key: the locksmith chooses a blank of the right size and files the bit until it clears the wards and lifts the levers inside your case, testing as they go. A pin-tumbler cylinder on a later lock is decoded or rekeyed and keys cut to it. Bring any loose keys that came with the house, since one may be close enough to serve as a starting pattern.

Vintage Mortise Lock Service near you

Peel, Ontario

Mississauga information

Town
Mississauga, Peel, Ontario
In business
31 years
Hours
Open 24/7 · nights, weekends and holidays, same fees
Visits
On-site assessment preferred. Request a visit or call.

What the census means at the door

38%

Homes of every age. About 38% of homes in Mississauga were built in 1980 or earlier, according to the 2021 Census.

In neighbourhoods with a mix of older and newer homes, the finishes on the doors vary widely: aged brass, satin nickel, matte black. A locksmith serving such an area keeps a range of finishes so replacement hardware suits each house.

37%

Single-detached houses make up about 37% of homes in Mississauga (2021 Census).

Where housing is mostly apartments and condos, mailbox locks are a regular call. A worn or lost mailbox key is a small job that a locksmith handles alongside the suite door, and the new lock comes with fresh keys cut on the spot.

Source: Statistics Canada, 2021 Census of Population

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After a wet summer the entry door sits lower in its frame.

Call now · open 24/7(289) 805-2659
  • On-site assessment preferred
  • Same fees day, night or weekend
  • 31 years in business