lock change in Montreal

A lock change in Montreal is mainly used to regain control of access: after losing keys, moving, an attempted break-in, a separation, or simply because the lock is no longer doing its job. In many cases, the work takes between 20 and 60 minutes on site. The right choice is not always to replace everything: sometimes a rekey, sometimes a new cylinder, sometimes a complete lock. What helps most is an honest assessment when the locksmith arrives.

At Serrurier Montréal, we often see the same situation: someone thinks they need to replace all the hardware, when only the cylinder is worn out or compromised. On the other hand, some low-cost locks installed ten or fifteen years ago are no longer worth repairing. If you are in a hurry or worried about security, the simplest thing is to request a mobile service in your area so a technician can check the door, frame, and lock type before recommending the right solution.

When the lock needs to be replaced, and when a simple rekey is enough

Complete replacement is recommended when the mechanism is worn out, when the lock has been damaged, or when the current model offers security that is too weak for the door’s actual use. This is common on front doors exposed to freezing temperatures, moisture, and temperature swings, especially in buildings where the door slams often.

Rekeying, on the other hand, means changing the internal combination so the old keys no longer work. It is often the best option after moving, staff turnover, losing a key ring with no address attached, or changing roommates. You keep the lock body if it is still in good condition, which lowers the cost and speeds up the job.

On a standard residential door, here is what we check before deciding:

• play in the cylinder or handle;
• key sticking, turning poorly, or needing to be “positioned” a certain way;
• alignment between the bolt and the strike plate;
• signs of forced entry around the lock cylinder;
• actual quality of the installed model.

In a plex, condo, or commercial space, we also look at key copy management. If too many keys are circulating and no one knows who has what anymore, replacing or reconfiguring access becomes a matter of control, not just mechanics. It is the kind of job our team handles regularly in addition to calls for residential, commercial, and auto locksmith emergency service.

What a locksmith actually does on site

The customer often sees only the new lock at the end. Yet most of the work is in the evaluation and adjustment. A new lock that is poorly aligned on a sagging door will cause problems in the very first week.

When we arrive, we start by identifying the setup: single deadbolt, entry handle with built-in lock, mortise, commercial lock, euro cylinder, patio door lock, or service garage door lock. Then we test the door open, then closed, because a mechanism can seem fine as long as the bolt is not working against the frame.

Replacement generally follows these steps:

• removal of the old hardware without damaging the door;
• inspection of the bore hole, plate, and strike;
• installation of the right model and the right backset;
• adjustment of the bolt for smooth closing;
• testing with all keys handed over to the customer.

If the frame has shifted, especially in an older building, we often correct the strike plate or reinforce its attachment. It is a detail many people overlook, even though it is what prevents a lock from binding every time the door closes. In winter, this becomes even more important: a door swollen by moisture, hardened weatherstripping, contracted metal, none of that helps a lock that is already worn out.

For businesses, we also think about traffic flow and schedule. An employee door, a rear delivery door, or a glazed main entrance do not have the same needs. A licensed mobile locksmith in Montreal must be able to adapt the installed part to the real context, not just replace “like for like.”

How long it takes, and what affects the price

For a simple replacement on a standard door, it often takes less than an hour. The job takes longer if the lock is seized, if a screw is damaged, if the door is misaligned, or if the model being installed requires drilling adjustments. On a commercial lock, a mortise, or a restricted key system, the work may require more preparation.

The price mainly depends on four things: the type of lock, the quality of the part, the complexity of the installation, and the urgency of the call-out. A night call after losing keys is not handled the same way as an appointment planned for a Tuesday morning. The hardware also matters a lot: the difference between an entry-level lock and a sturdier model with a better cylinder is real.

The factors that usually change the bill the most are:

• full replacement or rekey only;
• residential door versus commercial door;
• number of locks to key alike;
• need for strike plate reinforcement or frame repair;
• 24/7 emergency service.

Practical advice: always ask whether the price includes the part, labor, travel, and basic adjustments. A real on-site quote avoids surprises. At Serrurier Montréal, we prefer to explain what can be saved and what cannot before touching anything.

Choosing the right lock for a home, business, or secondary door

There is no single “best” lock for every situation. An apartment front door, a duplex back door, and a business door opened a hundred times a day do not handle the same use. The wrong choice leads to sticking keys, return service calls, or poor security.

For a home, the priority is often a reliable deadbolt with a decent-quality cylinder and a strike plate firmly attached to the structure. In many buildings, the most useful upgrade is not the most expensive lock, but the combination of a decent lock + clean installation + proper alignment. A good door that is poorly prepared is still a weak point.

For a business, we focus more on opening frequency, employee management, and the need for access levels. A front door may require sturdier hardware, while a storage room will need tighter control of spare keys. If you manage several entrances, it may be worth standardizing certain keys to avoid an unmanageable key ring.

Secondary doors are often the most neglected: alley, basement, side access, attached shed, door to the garage. Yet that is where we often see worn locks or weak models. After inspecting the property, we sometimes recommend spreading the budget across two or three access points rather than putting everything into the front door.

If you want to get an idea of the type of mobile coverage available by neighborhood, you can check the areas served by the team. For a rental building or a condo, also prepare the answer to this question before the technician arrives: do you want a new key for just one door, or do you want to key several locks alike on the same key ring?

After lost keys or an attempted break-in: mistakes to avoid

The first mistake is waiting “to see.” If your keys disappeared along with documents, a building badge, or an identifiable address, you need to act quickly. Even if the risk seems low, peace of mind comes from knowing the old key no longer gives access.

The second mistake is changing only the visible part when the door or frame absorbed the impact. After an attempted break-in, we often see a torn strike plate, cracked wood, a door that closes crookedly, or a forced cylinder that still works. “It still opens” does not mean “it is secure.”

The third mistake is rushing to buy an incompatible lock. Dimensions, backset, and door type matter. Many customers buy a standard model at a hardware store and then discover that their installation requires something else, especially on older doors, mortise locks, or certain commercial configurations.

Finally, do not leave unrecovered spare keys floating around. After staff changes, a breakup, construction work, or a short-term rental, you need to start again from a clear situation. If you have any doubt about the key history, it is better to fix it now than deal with unauthorized entry later. For a quick request, many customers go directly through our contact line to get same-day service.