Sound familiar?Cobourg
- The call
- 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.

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.
A business door rarely fails the same way a house door does, because it opens far more often and often has to satisfy a fire or egress rule a home door never faces. Replacement starts by identifying what the opening actually is: a mortise-prepped steel door, a narrow-stile aluminum storefront, a fire-rated door that needs listed hardware, or an exit serving enough people that code calls for panic-style release. The locksmith fits hardware built for that specific opening, connects it correctly to any electric strike or access-control wiring already present, and hands over keys cut and logged to the business's own system.
Sound familiar?Cobourg
Commercial-Grade Lock Replacement · Cobourg

Scene 1
The last part of the assessment looks past today's problem to how the business expects to manage this door going forward: does staff turnover happen often enough that an interchangeable core, which lets a key holder change the combination without pulling the whole cylinder, would pay for itself in convenience? Does the business want a restricted keyway so blanks cannot be cut at an ordinary hardware counter? These questions shape the specific hardware ordered as much as the door's physical construction does.
Scene 2
New keys are cut to the agreed system and tested in every door they are meant to open before anyone leaves the site. Where a master or interchangeable-core system is involved, the locksmith updates the business's key-control log with what was issued, what was retired, and which doors now share which key, so the paper record matches the metal. Any key that was reported lost or held by someone no longer with the business is confirmed as no longer functional on the new hardware.
Scene 3
The business is left with hardware sized to how the door is actually used: a mortise lock body or heavy cylindrical lockset that can take the traffic of a busy entrance, or a narrow-stile lock built for the aluminum frame it is mounted in rather than adapted to it. Staff can be shown how the new hardware feels different from the old one, whether that is a firmer latch, a smoother deadbolt throw, or a different key profile, so nobody is caught off guard by hardware that behaves differently from what they are used to.
What shapes the quoteCobourg Lock & Key Co.
FeesSame any hour
Yes, that is usually the first decision made. The locksmith checks whether your doors already run on a master or grand-master system, an interchangeable-core setup, or a restricted keyway, and orders replacement cylinders that slot into whichever structure you want to keep or move to. Bringing a new door onto an existing system is generally simpler than starting that door on its own.
That is a decision for the business, not the locksmith, but the general practice is to limit master keys to the smallest number of people who genuinely need building-wide access, and to log who holds each one. Sub-master and change keys can then cover departments, shifts or single doors without every key holder carrying access to everything.
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.
NorthumberlandOntario
Commercial-Grade Lock Replacement · Alnwick/Haldimand, Brighton, Cramahe, Hamilton, Gosport, East Colborne, Coverdale, Norham, Codrington, Orland, Smithfield
Every square is one home in a hundred.
On-site assessment
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.
(289) 677-1674, open 24/7.
On-site assessment preferred · (289) 677-1674, open 24/7