
Commercial · London
Commercial-Grade Lock Replacement
Overnight someone forced the back door, and the cylinder face is scarred, the metal around the strike has pulled loose from the frame, and the latch no longer sits flush.
Call now · open 24/7(226) 777-6122In plain words
Commercial-grade lock replacement swaps hardware that is worn, damaged, mismatched or simply not rated for a business door with hardware built for that duty: a mortise lock body, a heavy cylindrical lockset, or a narrow-stile lock or hookbolt for an aluminum storefront door. The locksmith reads the door's construction, the traffic the opening takes, and any key or access-control system already running before choosing a replacement. New hardware is keyed into that existing system rather than left to stand on its own, so one business ends up with one coherent set of locks instead of a patchwork of whatever was fitted door by door over the years.
How the visit goesHead office wants every branch keyed alike under one system, and half the locations are still running whatever lockset the original contractor happened to install years ago.
Commercial-Grade Lock Replacement · London
How the visit goes

- 1
Checking for a fire rating or an exit requirement
Some commercial doors are part of a fire separation or a required exit route, and that status changes which hardware is legal to install on them. The locksmith looks for a fire label on the door and frame, checks whether the opening serves an assembly space or a high-occupant-load area that calls for listed, push-type release hardware, and confirms whether the door is required to close and latch on its own. None of this is guesswork; it is read directly off the door, its label, and the building's own occupancy information.
- 2
Preserving the door's required behaviour
On a door required to close and latch on its own, the new hardware is installed and the closer adjusted so that behaviour still happens after the work is done: the door swings shut, the latch engages, and nothing about the new lock lets it be secured open in daily use. On an exit route where listed push-type hardware is required, the entire route from that door to the outside is checked so the new hardware fits the same standard as the rest of the path rather than becoming the one mismatched link in it.
- 3
One key system instead of a patchwork
Where the visit brought hardware onto a shared master or interchangeable-core system, the business now has one coherent structure instead of a different cylinder on every door. A master key opens what it is supposed to, sub-master and change keys are limited to their own doors, and the key-control log reflects exactly who was issued what. The next time a lock needs attention, whoever handles it can read that log rather than guessing at what system, if any, the previous hardware belonged to.
In the van
- Narrow-stile storefront lock
- Heavy-duty cylindrical lockset
- Mortise lock body
- Hookbolt and deadlatch hardware
- Electric strike
What affects the quote
- 1
Fire-rated or listed hardware requirements
A door that is part of a fire separation needs hardware listed for that specific rating, which is a narrower and typically costlier category than general-purpose commercial hardware, and the quote reflects that requirement rather than a standard substitute.
- 2
Site access and building type
A ground-floor storefront is the simplest case to reach and work on. A unit inside a larger building with its own access rules, or a site requiring coordination with building management, can add steps the quote takes into account.
- 3
Number of keys cut and issued
Keys are counted individually into the quote. A small office needing a handful of keys is a smaller line item than a multi-shift operation issuing keys to a large staff roster.
Same fees day, night or weekend.
Commercial-Grade Lock Replacement: questions
What is a grand-master key system, and does a small business need one?
A grand-master system adds a layer above a standard master key, useful for a business with several buildings or departments where one senior key should open everything and mid-level keys should open only their own area. A single-location business with a handful of doors usually only needs a straightforward master and change-key structure, without the extra layer.
What should I do with the old hardware once it is replaced?
That is entirely your choice. Some businesses keep old hardware briefly in case a spare part is needed elsewhere on the same system, others prefer it removed from the site straightaway, particularly after a break-in where the damaged pieces are no longer wanted around. The locksmith can leave it with you or take it away, whichever you prefer.
Does an electric strike need to match a specific lock function?
Yes. An electric strike has to suit the latch or deadlatch type it will receive, the door's handing and swing, and whether the application needs fail-safe or fail-secure operation, meaning whether the door should unlock or stay locked if power is lost. Choosing a strike without checking these against the mechanical lock is a common reason a door releases electronically but still binds mechanically.
Commercial-Grade Lock Replacement near you
Middlesex, Ontario
London information
- Town
- London, Middlesex, Ontario
- In business
- 23 years
- Hours
- Open 24/7 · nights, weekends and holidays, same fees
- Phone
- (226) 777-6122
- Visits
- On-site assessment preferred. Request a visit or call.
What the census means at the door
52%
Older homes. About 52% of homes in London were built in 1980 or earlier, according to the 2021 Census.
Period hardware on older homes deserves matching parts, not a mismatched modern set. A locksmith who works among such houses keeps finishes and styles that suit them, so a repaired or replaced lock still looks like it belongs to the door.
49%
A mix of homes. Single-detached houses make up about 49% of homes in London (2021 Census).
Mixed housing means a locksmith sees a bungalow in the morning and a condo tower in the afternoon. The stocked van has house-door deadbolts, suite-door cylinders and the finishes for each, so neither kind of customer waits for a second visit.
Open 24/7
Request a visit
Overnight someone forced the back door, and the cylinder face is scarred, the metal around the strike has pulled loose from the frame, and the latch no longer sits flush.
Call now · open 24/7(226) 777-6122- On-site assessment preferred
- Same fees day, night or weekend
- 23 years in business



