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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

The 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.

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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?

The interior bedroom doors on the second floor have the original mortise latches, and none of them close any more. The doors drift open, the small brass turn buttons do nothing, and the keyholes have been empty for as long as anyone can remember.

How the visit goes

Vintage Mortise Lock Service · Mississauga

How the visit goes

Person leaning over a blue bench machine in a small shop with keys, padlocks and door hardware displayed on blue walls.
  1. 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. 2

    Springs, levers and followers

    Springs are the usual culprits and the easiest fix. Broken coil and flat springs are matched from stock by length, wire gauge and shape, and fitted so the latch snaps out and the knob returns to level. A worn or cracked lever is matched from a donor case where one exists; where it does not, a replacement is filed from stock to the original's profile, which is slow, careful bench work rather than magic. A rounded hub is replaced or bushed. When every part moves as it should, the case is closed and cycled by hand with the cover on until the action is smooth and even in both directions.

  3. 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

  • Dry graphite or PTFE lubricant
  • Spindle and knob set screws
  • Warding files
  • Reproduction mortise case
  • Cylinder set screw

What affects the quote

  1. 1

    Number of locks in the visit

    One entry lock is the simplest case. A whole floor of interior latches, or the front and back doors together, is a longer visit, and each case is quoted on its own so the total is easy to follow.

  2. 2

    Extras you choose on the day

    A high-security cylinder, a lockbox for a spare bit key or a separate modern deadbolt above the original are optional additions. None is required to make the old lock work, and each is priced as its own line.

  3. 3

    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.

Same fees day, night or weekend.

Have it ready

Before you call · 0 / 3

(289) 805-7422

Vintage Mortise Lock Service: questions

Advice · (289) 805-7422

How long does servicing a mortise lock take?

A single entry lock that needs cleaning, springs and a strike adjustment is generally done in one visit of an hour or two. Filing a bit key adds bench time, and a set of interior latches is longer simply because there are more of them. A case that needs a part fabricated, or a replacement case that has to be ordered to size, may mean a second visit; the locksmith says so at the assessment.

Can a modern cylinder be fitted to my old mortise lock?

Often, on cases that already take a threaded cylinder. Mortise cylinders are made in standard thread sizes and lengths with different cam shapes, and a new one is selected to match the case and the door thickness. That gives you keys cut on a machine and the option of keying the door alike with the rest of the house. A bit-key case has no cylinder to swap; its keys are made on the bench instead.

Does a rented home need the landlord involved for this work?

Repairing a lock so it works as before is ordinary maintenance, but anything that changes who can open the door, such as a rekeyed cylinder or new keys, is something a tenant and landlord are expected to agree on and share keys for. The locksmith asks up front who should receive keys and can leave a note of what was done for the property manager, so both sides know what is on the door.

Peel, Ontario

Mississauga information

Town
Mississauga, Peel, Ontario
In business
12 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 an area of varied housing ages, rekeying is the one job that fits every door. Old cylinders and new ones both take fresh pins, so a household moving into either kind of home can start with keys that nobody else holds.

37%

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

Attached housing turns over more often than detached, so rekeying between tenants or owners is a constant. Because suite doors tend to be standard, the job is usually a straightforward pin change and a fresh set of keys cut on site.

Source: Statistics Canada, 2021 Census of Population

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The knob flops loose on its spindle and never springs back to level.

Call now · open 24/7(289) 805-7422
  • On-site assessment preferred
  • Same fees day, night or weekend
  • 12 years in business