Change or rekey · Humber Summit
Vintage Mortise Lock Service in Humber Summit
Someone painted the door years ago without removing the hardware.
In plain words
Vintage mortise lock service is the repair of the original lock in an older door rather than its removal. The lock is a rectangular steel case that lives inside a pocket in the door edge, and nearly everything that goes wrong with it, a tired spring, dried grease, a worn hub, a lost key, can be put right on the bench. The locksmith confirms you own or occupy the home, takes the case out through the door edge, rebuilds it, sorts out the keys and puts it back in the same pocket. The door keeps its knobs, escutcheons and history, and it locks as it did when new.
How the visit goesThe 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. You have one key and no idea where a second could come from.
Vintage Mortise Lock Service
How the visit goes
Condition of the wood around the pocket
The mortise pocket and the screw holes in the door edge carry the whole lock, so their state is part of the assessment. The locksmith probes the faceplate screws for grip, looks for cracks running from the pocket into the stile, and checks whether an earlier repair enlarged the pocket or packed it with something soft. Stripped holes, a split edge or a case that shifts when the knob is turned change the plan: dowelling and re-drilling, a hardwood filler, or longer screws may be needed before the rebuilt case can be trusted. Finding this now avoids surprises once the lock is back in the door.
When a case is fitted new
If the old case could not be saved, the replacement is fitted to the door rather than the door to the replacement. A reproduction or modern mortise case matching the measured height, depth, backset, faceplate and hub is chosen with the goal of it dropping into the existing pocket; where a small difference remains, the pocket is trimmed with a chisel by the least amount that works, never bored out. The original knobs, escutcheons and strike are refitted wherever their spacing allows, and a new cylinder is keyed to match the rest of the house if wanted. The result reads as the original lock from either side of the door, with the reliability of a fresh mechanism.
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.
Vintage Mortise Lock Service
In the van
Warding files
Mortise cylinder and cam
Hub followers and lever packs
Hardwood dowel and wood glue
Deadbolt lever springs
Vintage Mortise Lock Service
What affects the quote
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.
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.
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.
What to have ready
- Is the trouble worse with the door closed than with it open?
- What does the knob do when you turn it: return, sag, or not come back?
- Is the property designated as a heritage building?
Vintage Mortise Lock Service: questions
QuestionsWhat if the case is too worn to repair?
Then a replacement case goes into the existing pocket. Reproduction mortise cases are made in the common vintage sizes and backsets, and a modern mortise case with a cylinder fits many old pockets with minor trimming. The locksmith measures the case height, depth, backset and trim spacing before ordering, aiming for the new case to drop in with the original knobs and plates going back on, though a small pocket trim or fixing change is sometimes needed. Cutting the door for a different kind of lock is the last choice.
Can the lock be made more secure while keeping it original?
Yes, within reason. A later mortise case can take a modern high-security cylinder of the right thread and cam, chosen for its pick resistance; stopping casual key copying is a separate question, answered by fitting a restricted or patented key system alongside it. Longer screws into the strike and a properly seated deadbolt add more than most people expect. For a bit-key lock, the practical gains are a full-throw deadbolt and a good strike; if more is wanted, a separate modern deadbolt above it leaves the original lock untouched.
Can you match a missing knob, plate or thumb-turn?
Often, yes. Locksmiths who work on older hardware keep salvage and reproduction trim in the common patterns and finishes, and a knob, rosette or escutcheon can usually be found close enough that the pair on one door match. Where nothing suitable exists, the trim from a less visible door can be moved to the entry and the reproduction fitted where it is seen less. Bring or photograph the surviving piece so it can be matched.
Related services
- Deadbolt InstallationThe front door has a handsome lever and a keyed knob, and that is all.
- Lock Replacement & UpgradeThe century home's original mortise lock takes a key the size of a spoon, sticks in humid weather and has worn its strike to a groove.
- Smart Lock InstallationYour mother still lives on her own, and the personal support worker, the pharmacy delivery and two siblings all need to get in on different days.