Change or rekey · Mississauga
Lock Replacement & Upgrade
Every morning the front door key needs the same little dance: push in, lift, wiggle, turn.
In plain words
A replacement lock has to fit holes that already exist, and that is where the visit begins. The locksmith measures the backset, the distance from the door edge to the centre of the bore, which on most doors is 60 or 70 millimetres, checks the cross-bore diameter and edge-bore size, notes door thickness and handing, and looks at the strike cut-out. Most residential hardware is made to these standard preparations, so the new lock usually drops into place with no new drilling. Where a mortise lock or a thick door departs from the norm, filler plates, extension kits or a careful new bore bring the door up to standard.
How the visit goesThree teenagers, a dog walker, a cleaner and one house key that keeps going missing. You are tired of cutting copies and would rather give each person a code you can switch off, with a proper deadbolt behind it.
Lock Replacement & Upgrade
How the visit goes
The key plan for the whole house
A lock is only half of a system; the other half is who holds which key. The locksmith asks how many exterior doors there are, which ones should open with the same key, whether a garage man-door or a shed should join them, and who in the household needs a key of their own. If keys have been lent out over the years, the plan can retire all of them at once. Where copying keys without permission is a worry, a restricted keyway can be offered. Settling this before the hardware is chosen means the new locks arrive ready to be pinned alike rather than fixed up afterwards.
Stepping up the grade of a deadbolt
When the brief is a stronger door, the new deadbolt is chosen for what is inside it: a bolt with a full 25 millimetre throw and a hardened steel insert that spins against a saw, a housing that stands low so a wrench has nothing to grip, and a cylinder with pins that resist picking and bumping. Fitting follows the normal steps, but the locksmith confirms the bolt reaches full extension with the door closed, because a high-grade bolt seated halfway into a shallow pocket behaves like a low-grade one. The strike is upgraded alongside it so both halves of the lock share the same standard.
A record of what went on the door
You are told plainly what was fitted: the maker and model, the grade, the function and finish of each lock, whether the strike was reinforced, and how the doors are keyed. The instruction sheets and packaging stay with you, since they carry the model numbers needed for a matching lever or a spare cylinder later. The old hardware is handed over or taken away as you prefer; a sound old cylinder can be worth keeping as a spare. For a rental, this account doubles as the note a landlord or property manager will want about the new keys.
Lock Replacement & Upgrade
In the van
Key blanks and key cutter
Adjustable latch or bolt
Manufacturer-approved cylinder lubricant
Knob or lever entry set
Chisels, mallet and hand screwdrivers
Lock Replacement & Upgrade
What affects the quote
Grade of hardware
A light Grade 3 knob set, a residential deadbolt with a strong label rating and a Grade 1 commercial-style deadbolt are different products at different levels, and the quote follows the grade you choose for each door.
Number of doors
One back door is a small visit; the front, back, side, garage man-door and patio slider together are a longer one, though several doors done at once share the travel and setup.
Authorization needed from a property manager or landlord
A rental or condominium unit sometimes needs sign-off from a property manager or landlord before a lock is changed, and new keys may need to reach more than one party afterward. Confirming who is authorized and who receives keys is worked out before the new hardware goes in.
What to have ready
- Are you interested in a keypad or smart lock on any door?
- Is there glass in or beside the door?
- Do you want every exterior door to open with one key?
Lock Replacement & Upgrade: questions
QuestionsCan I stop people copying my house key?
A restricted keyway helps with that. The key blanks are controlled by the manufacturer and its authorised locksmiths, so a copy generally requires the card, record or authorisation the program uses, cutting down on copies made at an ordinary kiosk. It suits homes where keys are lent to cleaners, contractors or tenants. The cylinders are fitted in the normal way, and you keep the key card safe because it is what future copies depend on.
What is a reinforced strike, and is it worth adding?
A standard strike is a thin plate held by two short screws in the jamb, and the jamb is what splits when a door is forced. A reinforced strike or strike box is heavier and is fixed with long screws that pass through the jamb into the framing, spreading the load into the structure. It is one of the most effective upgrades on any exterior door and is usually fitted as part of a deadbolt replacement.
My old house has a mortise lock. Can it take modern hardware?
Often the original case can be kept and given a new cylinder and strike, which keeps the period look and the old door intact. Where the case is beyond service, a filler or conversion plate covers the mortise pocket and lets a cylindrical deadbolt or knob set be fitted without cutting into the door's stile. The locksmith looks at the door before recommending either path, since old doors vary a great deal.
Related services
- Deadbolt InstallationYou bought a keypad deadbolt online and pulled the old one off, only to find the hole in the door is a different size and the bolt latch sits at a backset the new kit does not list.
- Vintage Mortise Lock ServiceThe knob flops loose on its spindle and never springs back to level.
- Smart Lock InstallationThere are four copies of the front-door key floating around: one with the cleaner, one with a neighbour, one on a hook at your parents' place, and one you honestly cannot account for.