
Change or rekey · Ajax
Lock Replacement & Upgrade
Every morning the front door key needs the same little dance: push in, lift, wiggle, turn. It has been getting worse for a year, and this week it took three tries in the cold before the deadbolt finally gave.
Call now · open 24/7(289) 275-3289In plain words
After a break-in or an attempt, the door tells a story, and the new hardware should answer it. Splintered wood around the strike means the jamb gave before the lock did, so the repair pairs a heavier deadbolt with a reinforced strike and 75 millimetre screws that reach the framing behind the jamb. A bent bolt or cracked housing is replaced with a graded deadbolt whose bolt has a hardened core. A knob lock that was bumped or forced is swapped for a set with better pins. The aim is a whole opening that resists force, not merely a shinier lock.
How the visit goesThe 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.
Lock Replacement & Upgrade · Ajax
How the visit goes

- 1
Who is asking for the change
The first check is about the person, not the door. An owner can change any lock on their home. A tenant who wants new hardware on the unit door needs the landlord's agreement, and a landlord who changes a lock while a tenant lives there hands over new keys. The locksmith asks which situation applies and, where paperwork helps, looks at identification, a deed, a lease or a property-management note. It takes a minute and it means the new lock goes on with everyone who has a stake in the door knowing about it, which is exactly how a lock should start its working life.
- 2
Adapting older and unusual doors
Not every door is a standard modern slab. A century home with a mortise lock may keep its case and get a new cylinder and strike, or take a filler plate that lets a cylindrical deadbolt sit where the old case was, without hacking at the original stile. A door thicker than 45 millimetres gets extended spindles and screws. A sliding patio door gets a replacement mortise hook lock or a keyed surface bolt sized to the rail. Steel and fibreglass doors are drilled only with the right bits and a jig, and a new deadbolt above an existing knob is bored with a template so it sits square.
- 3
Simple habits that keep new hardware new
New locks ask very little. Once or twice a year, or at whatever interval the lock maker specifies, a puff of the lubricant that maker calls for in the keyway and a few turns of the key keep the pins moving freely, since the wrong product for that cylinder gathers grit instead of helping it. In winter, wipe salt spray off the exterior hardware when it appears, since salt is the finish's main enemy here. Each spring and fall, check that the hinge and strike screws are snug, because wood doors move with humidity and a dropped door makes a good lock feel worn. A key that starts to need coaxing is an early word from the cylinder.
In the van
- Key blanks and key cutter
- Handleset with matching deadbolt
- Knob or lever entry set
- Adjustable latch or bolt
- Graded deadbolt
What affects the quote
- 1
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.
- 2
Restricted keyway system
Patented cylinders and controlled key blanks cost more than standard hardware and involve setting up your key records, which is quoted separately from an ordinary replacement.
- 3
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.
Same fees day, night or weekend.
Lock Replacement & Upgrade: questions
Can a lever replace a knob on the same door?
Yes, and it is a common change for anyone who finds a knob hard to grip. Levers use the same bore and backset as knobs, so the swap is usually a direct fit. Levers are handed, so the locksmith checks which way the door swings and chooses or adjusts the lever accordingly. A keyed entry lever pairs well with a deadbolt above it, and interior passage and privacy levers complete the set.
What information helps before the visit?
Photographs of each lock from outside and inside, plus one of the door edge showing the latch plate and one of the strike on the frame, tell the locksmith most of what they need. Add the door thickness if you can measure it, whether the door is wood, steel or fibreglass, the finish you want to match, how many doors are involved and whether you want them all on one key.
What does a higher grade of lock actually give me?
Grades follow ANSI/BHMA standards, with Grade 1 the highest and Grade 3 the lightest, and residential hardware carries a separate label that scores security, durability and finish. The grade reports how the lock performed on the standard's own operational, strength and security tests; a higher grade often comes with a longer bolt, a sturdier housing, pins that resist picking and a strike built to anchor into the framing, but those features are worth confirming on the specific model rather than assumed from the grade alone.
Lock Replacement & Upgrade near you
Durham, Ontario
Ajax information
- Town
- Ajax, Durham, Ontario
- In business
- 29 years
- Hours
- Open 24/7 · nights, weekends and holidays, same fees
- Phone
- (289) 275-3289
- Visits
- On-site assessment preferred. Request a visit or call.
What the census means at the door
23%
Newer homes. About 23% of homes in Ajax were built in 1980 or earlier, according to the 2021 Census.
New homes frequently come with strikes held by short screws into soft framing. Replacing them with longer screws that reach the stud is inexpensive work that adds real strength, and it is one of the first things a locksmith checks in a newer area.
65%
Mostly houses. Single-detached houses make up about 65% of homes in Ajax (2021 Census).
Families in houses hand keys to children, cleaners, dog walkers and neighbours. A locksmith can set up a keypad on the side door for the household and keep the front door on a conventional key, so access matches how the family actually comes and goes.
Nearby
Open 24/7
Request a visit
Every morning the front door key needs the same little dance: push in, lift, wiggle, turn.
Call now · open 24/7(289) 275-3289- On-site assessment preferred
- Same fees day, night or weekend
- 29 years in business




