Sound familiar?Oshawa
- The call
- The house is fifteen years old and every exterior door still wears the light hardware the builder fitted: a short bolt, a thin strike held by two small screws, and a knob lock that never suited a street entrance.

The lever on the side door droops toward the floor and rattles in your hand. The latch no longer springs back on its own, so the door drifts open behind you unless you pull it shut and check it twice.
Lock replacement and upgrade is the service that takes tired or under-built door hardware off and puts hardware suited to the door in its place. It ranges from a like-for-like deadbolt on a back door to a complete refit of every entrance with heavier-grade locks, reinforced strikes and one key for the house. The locksmith first confirms that the person ordering the work has the right to change the lock, then examines the door, measures the existing preparation and recommends hardware that fits it cleanly. The visit ends with each lock tested from both sides, keys in your hand and the packaging and instructions left with you.
Sound familiar?Oshawa
Lock Replacement & Upgrade · Oshawa

Scene 1
The locksmith works the existing hardware the way you do every day and watches for the tell-tale signs. A key that must be lifted or wiggled points to worn pins or a worn key. A knob that turns too far, or a lever that droops, suggests a tired spindle or spring. A latch that stays retracted, or a bolt that stops short, can be internal wear or something outside the lock altogether. Doing this with the door open first, then closed, separates faults inside the mechanism from faults in the fit of the door, and that distinction decides whether new hardware is the answer or part of the answer.
Scene 2
The exterior housing goes on with its tailpiece passing through the slot in the bolt, oriented as the maker specifies so the keyway sits upright. The interior thumb-turn or rose is offered up and the two long mounting screws are drawn down evenly by hand until firm, not crushed; zinc housings distort and threads strip under a drill, and an over-tight rose makes a lever heavy forever. On thick doors, extension kits bring screws and spindle to length. A knob or lever set adds the latch spindle and the spring cage, and the handle is checked to return crisply to level before the trim is snugged.
Scene 3
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.
What shapes the quoteMount Carmel Locksmith Pros
FeesSame any hour
A keyed interior cylinder means finding a key to get out, which is not what you want on a door people use every day. The steadier answer for a door with glass is a single-cylinder deadbolt with a thumb-turn, combined with a reinforced strike, a longer bolt and a security film or laminated glass in the sidelight.
Very little is needed. Whatever lubricant and interval the cylinder maker specifies, worked into the keyway with a few turns of the key, keeps the pins free; using the wrong product collects grit instead of helping. Wipe salt off exterior hardware during winter melts. Snug the hinge and strike screws each spring and fall as the door moves with humidity. Cut spare keys from a crisp original rather than a worn copy.
Yes, provided the cylinders share a compatible keyway, which the locksmith checks when choosing hardware. New cylinders are pinned on site to a single new key and any existing locks worth keeping are repinned to match. Front, back, side and garage doors commonly end up on one key, and a shed or gate padlock can join them. You then decide how many copies exist and who holds each.
DurhamOntario
Lock Replacement & Upgrade · Columbus
Every square is one home in a hundred.
On-site assessment
The lever on the side door droops toward the floor and rattles in your hand.
(289) 367-6857, open 24/7.
On-site assessment preferred · (289) 367-6857, open 24/7