

Change or rekey · Unionville
Lock Replacement & Upgrade in Unionville
Someone tried the back door while you were away.
In plain words
Sometimes the reason is simply that the hardware looks wrong or has weathered badly. Road salt, freeze-thaw and humid summers are hard on finishes, and a brass handleset can go blotchy while a lacquered knob peels. The locksmith helps you pick a finish that suits the exposure, whether matte black, satin nickel or a PVD brass that resists tarnish, and matches the deadbolt, handleset and interior levers so the entrance reads as one design. Function and grade are chosen alongside looks, so a door refreshed for appearance also comes out better protected.
How the visit goesThe 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. You want a lock that works every day without giving up the old door.
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.
Taking the old hardware off without harm
Removal is done with the same care as fitting. Interior trim screws come out first, then the interior rose or thumb-turn, and the exterior housing lifts away with its tailpiece. The latch or bolt slides out of the edge bore once its two faceplate screws are released, and the old strike comes off the jamb. Painted-over screws are scored free rather than forced, seized screws are eased with a hand driver of the right size, and a stripped head is drilled out only as a last step. The bore and edge mortise are then cleaned of paint build-up and debris so the new parts seat properly.
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
Cylinders, plug follower and pinning kit
Knob or lever entry set
Manufacturer-approved cylinder lubricant
Filler plates and thick-door extension kits
75 millimetre strike and hinge screws

Lock Replacement & Upgrade
What affects the quote
Condition of the old hardware
Hardware that comes off cleanly is one thing; painted-over trim, seized or stripped screws and a cylinder that has to be drilled out add time before the new lock can go on.
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.
Finish and style
Standard satin nickel or brass is one line; specialty finishes, matched suites across several doors and designer handlesets are others. The finish you choose for exposure and looks is priced as the maker prices it.
What to have ready
- Do you own the home, or rent it with the landlord's agreement to change locks?
- Has the door been forced or damaged, or does it need a push to lock?
- Can you photograph each lock from outside, inside and along the door edge?
Lock Replacement & Upgrade: questions
QuestionsI have just bought a house. What should I do about the locks?
Assume that copies of the old keys exist somewhere and act on the day you take possession. Walk every exterior door with the locksmith, keep hardware that is sound and have it rekeyed to a new key, replace hardware that is worn or too light, and add a deadbolt to any door that lacks one. Ask for everything to be keyed alike so you leave with one key and a known number of copies.
Is a smart lock a good upgrade, and what happens when the batteries run out?
For a household with many people coming and going, codes that can be added and removed are a real convenience. Behind the keypad it is still a deadbolt, so grade and strike matter as much as ever. Batteries typically last months and the lock warns you as they fade; depending on the model, a dead battery is handled with a mechanical override key or with external contacts for a temporary power source, so it is worth confirming which one your lock uses.
How long does a lock replacement take?
A straightforward like-for-like deadbolt or knob set on a standard door is often a matter of an hour or less including testing. Add time for a reinforced strike, for keying several locks alike and cutting keys, for a smart lock's setup and pairing, and for repairing a split jamb or adapting an older door. When several entrances are done together, the locksmith gives a realistic window before starting so you can plan the day.
Related services

- Deadbolt InstallationYou moved in three weeks ago.
- Vintage Mortise Lock ServiceThe 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.
- Smart Lock InstallationThe deadbolt is a stiff double-cylinder model that needs a key from both sides, and in the dark hallway finding it is a nuisance.