Residential Locksmith
Lock Repair and Door Alignment in Mississauga
Most locks that stick, stiffen or refuse to turn are not broken cylinders. They are misaligned doors, worn keys or seized mechanisms, and all three are repairable on site. Johnson Locksmith diagnoses the actual fault before quoting a replacement, across Mississauga.
Commercial lock serviceQuoted on the call
Open 24 hours, 7 days a week
Call (289) 324-0340Price agreed before we dispatch. Johnson Locksmith Inc., 6375 Dixie Rd #207b, Mississauga, ON L5T 2E7, Canada.
Upfront pricing, agreed before we dispatch
See the full price list| Job | Starting price | What it covers |
|---|---|---|
| House lockout | from $35 | Opening a locked door without damage wherever the lock allows. |
| Car lockout | from $35 | Opening the vehicle at the roadside, without damaging the seal or the lock. |
| Lock change or installation | from $35 | Labour to fit new hardware. The lock itself is quoted with it. |
| Car key made | from $100 | Cutting a key at the vehicle. Programming is priced separately below. |
Each figure is a starting price in Canadian dollars for the simplest version of that job. Hardware, the hour and what we find on the door move it, and you are told the full total before a van is dispatched, in writing by text if you ask. Nothing is added on arrival that was not flagged first. Call (289) 324-0340 for a firm quote.
The lock is usually not the problem
When a customer says the lock is broken, the fault is somewhere else about two thirds of the time. The cylinder turns perfectly well; what has failed is the relationship between the door, the frame and the strike.
Ontario's climate does this. A door swells in July humidity and shrinks in a dry February. A house settles over its first decade. Hinge screws work loose and the door sags a few millimetres on its top hinge, which drops the bolt below the strike hole. None of that is a lock fault, and replacing the lock will not fix any of it.
That is why a repair visit starts with the door open, the bolt thrown into free air, and the strike inspected for the bright scrape marks that show where the bolt has been dragging. Those marks tell you exactly what is wrong before a single screw comes out.
Symptoms and what they usually mean
The way a lock fails narrows the cause down quickly. Matching the symptom to the likely fault saves a wasted parts run.
| What you notice | Usual cause | Typical repair |
|---|---|---|
| Bolt only throws if you pull the door toward you | Door or frame has shifted, strike is out of line | Adjust hinges or move and re-mortise the strike |
| Key goes in but turns stiffly | Dry or contaminated cylinder, or a worn key | Clean and dry lubricate the cylinder, cut a fresh key from code |
| Key turns freely and nothing happens | Cylinder cam or tailpiece has sheared | Replace the cylinder or the tailpiece |
| Knob or lever spins without retracting the latch | Broken spindle or failed internal retractor | Replace the lockset, the internal parts are not serviceable |
| Nothing moves at all in cold weather | Moisture inside the cylinder has frozen | Warm the cylinder, then flush and dry lubricate it |
| Deadbolt throws but the door still rattles | Strike pocket is oversized or the weatherstrip has flattened | Shim the strike or replace the weatherstripping |
Frozen locks and Canadian winters
A frozen cylinder is a moisture problem that only reveals itself below zero. Water gets into the keyway during a thaw or a rain, sits in the pin chambers, and freezes solid overnight. The key either will not enter or will not turn.
Do not force it. A key snapped in a frozen cylinder turns a ten minute job into an extraction plus a replacement key. Do not pour boiling water into the lock either, because the water refreezes deeper inside and takes the finish off the hardware on its way.
The correct approach is gentle heat and then dry lubricant. Warm the key with a lighter and ease it in, or use a purpose made lock de-icer, which is mostly alcohol and displaces water rather than adding more. Once it turns, flush the cylinder with a PTFE or graphite based dry lubricant so the water that caused it is gone before the next freeze.
Never use WD-40 or another oil based penetrant as a permanent lock lubricant. It frees a stuck lock for a fortnight, then collects dust and grit into a paste that seizes the pins far more thoroughly than the original problem did.
When repair stops being worth it
Repair is the right call when the hardware is fundamentally sound and one part has failed or drifted. It stops being the right call at a fairly clear line.
- The plug is loose in the housingIf the key wobbles noticeably when inserted, the cylinder is worn through. Repinning it puts new pins into a shell that no longer holds tolerances.
- The lock has been forcedA cylinder that has been drilled, snapped or pried has lost its security value even if it still turns. Replace it.
- Parts are no longer madeHardware from the 1970s and 1980s often has no available internals. A visually matching modern replacement is the cheaper route.
- It is a Grade 3 lock on a front doorIf it has failed once it will fail again. Take the opportunity to move up a grade rather than repairing back to a standard that was never adequate.
- The repair approaches the replacement costParts plus labour on an old lockset can exceed a new Grade 2 lock installed. We will say so rather than bill the repair.
Repairing the door, not just the lock
A large share of lock repair calls end with a screwdriver and no new parts at all. Tightening three long screws into the top hinge lifts a sagging door back into line and the bolt drops straight into the strike again.
Where the frame has moved permanently, the strike gets relocated and re-mortised so the pocket sits where the bolt now lands. Filling the old screw holes with hardwood dowel before redrilling matters, because screws driven into a stripped hole will loosen again within a season.
On a door where the jamb has split, usually from a previous forced entry attempt or from years of slamming, the honest fix is to repair or reinforce the jamb. A perfect lock in a split frame is a lock that is holding onto nothing.
Frequently asked questions
Why is my deadbolt hard to lock?
What should I use to lubricate a door lock?
My key turns but the door will not open. What is wrong?
Can a frozen lock be repaired or does it need replacing?
Related locksmith services
- House Lockout ServiceLocked out of your home. We open standard residential doors without drilling wherever the lock allows it.
- Lock InstallationNew locks fitted and aligned properly, including doors that have never had a lock in them before.
- Emergency Lock RepairDoors that will not lock after a break in or a failure, made secure the same night.
Lock Repair in your neighbourhood
This page sits under residential locksmith services in Mississauga, part of the full list of locksmith services we provide.
Locked out, or need a lock sorted properly?
Call and you will speak to someone who can tell you the price and a realistic arrival window before a van is dispatched. Any hour, any day.
Open 24 hours, 7 days a week
(289) 324-0340Or send us the detailsJohnson Locksmith Inc.
6375 Dixie Rd #207b, Mississauga, ON L5T 2E7, Canada