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

Change or rekey · New Tecumseth

Vintage Mortise Lock Service

The key turns freely in the round cylinder on the door, all the way around and back, without the bolt shifting at all. The cylinder itself wobbles slightly when you press it, as if it has come loose inside the door.

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In plain words

Most old mortise locks fail for boring reasons. A coil spring that has been compressed a hundred thousand times since the house was built finally breaks, or the grease inside the case dries into something like wax and the levers stick in it. Neither justifies cutting a new hole in a solid oak door. The service opens the case, cleans out the old lubricant, replaces the springs with the right size, matches any worn follower or lever and lubricates the mechanism lightly. The same case goes back into the same pocket, and the knob returns to level with the crisp snap it had decades ago.

Sound familiar?

The brass knob on the front door of your century home turns, but nothing happens on the other side. The latch stays tucked in, the door swings free, and the only thing holding it shut is the deadbolt and a bit key that has worn down to a nub.

How the visit goes

Vintage Mortise Lock Service · New Tecumseth

How the visit goes

Two technicians in green shirts look over a metal tray holding a chrome tool beside a white van with open rear doors.
  1. 1

    How the knob and key actually behave

    A short conversation with the hardware comes next. The knob is turned and released: does it return smartly, sag back, or not return at all? Is there free play before the latch moves? The key is tried in the deadbolt with the door open: does the bolt throw fully, catch part way, or ignore the key while the key turns? The thumb-turn gets the same test. Each answer points somewhere different inside the case, a latch spring, a hub spring, a worn hub square, a deadbolt lever, a cylinder cam, and the locksmith is building a short list of likely parts before the cover ever comes off.

  2. 2

    Inside the case on the bench

    With the cover screws out, the case opens like a book: the latch bolt with its spring, the hub the spindle passes through, the deadbolt with its lever or tumblers, and the springs holding each in place. The locksmith notes what is broken, worn or merely stuck, then cleans the case with solvent and a brass brush until the old grease and rust are gone; old paint on the hardware is treated as a possible lead hazard and cleared with contained, lead-safe methods rather than dry brushing. Parts are cleaned individually, burrs are dressed off the bolts, and the hub square is checked against a fresh spindle to see whether it has rounded.

  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

  • Mortise cylinder and cam
  • Bit key blanks
  • Reproduction mortise case
  • Latch and hub springs
  • Dry graphite or PTFE lubricant

What affects the quote

  1. 1

    Strike and hinge work

    Where the door has dropped or swelled, adjusting or moving the strike and tightening or packing hinges is part of the fix. It is small work but it is listed, so you see what was done to the door.

  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

    Paint and seized parts

    Hardware buried under decades of paint takes time to free and clean without damage. A faceplate, strike and thumb-turn that have to be stripped back add to the visit and are noted in the quote.

Same fees day, night or weekend.

Have it ready

Before you call · 0 / 3

(249) 501-0299

Vintage Mortise Lock Service: questions

Advice · (249) 501-0299

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.

What does the service visit involve, step by step?

The locksmith checks your authority to request the work, examines the door and lock, and tells you what it needs. The knobs, plates and cylinder come off, the case slides out of the door edge and is opened on a bench, cleaned, re-sprung and repaired. Keys are made or the cylinder rekeyed, the door pocket is tidied, everything goes back on, and the strike is adjusted. You test the finished lock from both sides.

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.

Vintage Mortise Lock Service near you

Simcoe, Ontario

New Tecumseth information

Town
New Tecumseth, Simcoe, Ontario
In business
26 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

32%

Newer homes. About 32% of homes in New Tecumseth were built in 1980 or earlier, according to the 2021 Census.

New homes frequently come with strikes held by short screws into soft framing. Replacing them with longer screws that reach the stud is inexpensive work that adds real strength, and it is one of the first things a locksmith checks in a newer area.

71%

Mostly houses. Single-detached houses make up about 71% of homes in New Tecumseth (2021 Census).

Detached homes are exposed to weather on every side, so exterior locks see rain, salt and freezing air directly. Choosing hardware with a good finish and a cylinder that tolerates cold, then lubricating it properly, keeps every door turning through winter.

Source: Statistics Canada, 2021 Census of Population

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The key turns freely in the round cylinder on the door, all the way around and back, without the bolt shifting at all.

Call now · open 24/7(249) 501-0299
  • On-site assessment preferred
  • Same fees day, night or weekend
  • 26 years in business