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Person holding the black deadbolt and doorknob of a partly open blue front door. — Deadbolt Installation, Kennedy Park
Two detached brass lock cylinders and four house keys on a wooden counter. — Lock Rekeying, Kennedy Park

Change or rekey · Kennedy Park

Deadbolt Installation in Kennedy Park

The bolt on the front door is keyed on both sides.

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In plain words

If your door already has a knob or lever bore and nothing above it, adding a deadbolt is a boring job in the literal sense. A jig clamps to the door at the right height, usually 140 to 150 mm above the knob centre, and guides a hole saw through the face and a smaller bit through the edge. The locksmith mortises the edge so the bolt faceplate sits flush, sets the bolt to the door's backset, then fits the cylinder outside and the thumb-turn inside. The frame is marked from the bolt itself, bored and chiselled for the strike, and the lock is tested open and closed.

Sound familiar?

Someone tried the door last winter. The frame took it, but the strike plate is bent, one screw hole is stripped, and the bolt sits in the pocket at a slight angle. It still locks, and it still bothers you every night.

How the visit goes

Deadbolt Installation

How the visit goes

Roll-up black cloth pouch lying open on a worn wooden bench, holding thin metal probes and hooked tools in separate pockets. — Kennedy Park
Technician in safety glasses holding a steel deadbolt with a keyway beside a splintered door edge and a tool case. — Kennedy Park
  1. Exit, fire and who lives here

    The last part of the first look is about the people, not the door. The locksmith asks whether this is the door the household leaves through, whether children, older relatives or anyone with limited hand strength use it, and whether it is a rental where the landlord holds keys. A door that serves as a way out gets a thumb-turn planned for it, so nobody has to hunt for a key to leave. A lever thumb-turn is easier for small or stiff hands than a knurled one, and a rental may need a note to the building manager. None of this takes long, and it shapes which box comes off the van.

  2. Testing open, then closed, then keyed alike

    The finished lock is proved in three stages. With the door open, the thumb-turn and then the key are cycled several times to confirm the bolt throws fully and returns freely. With the door closed, the same tests show whether the bolt clears the strike opening and seats in the pocket; any drag is marked with chalk and the strike is dressed or shifted until the bolt moves with fingertip effort. If the cylinder is being keyed to the household key, it is repinned on the bench and tested from outside with the door closed, and every key that should work is tried before the tools go back in the van.

  3. A frame that now holds the bolt

    Behind the new strike plate is the part of the job you cannot see and will never need to think about. The pocket has been bored deep enough for the bolt to seat fully, the plate has been let into the jamb so it sits flush, and the long screws reach through the jamb into the framing behind it. On a door that had been forced or had stripped screw holes, a full-length reinforcer may sit under the strike. If you press the jamb with your palm now, it does not flex. That stiffness is what a bolt needs to do its work, and it is the reason the installation took as long on the frame as on the door.

Deadbolt Installation

In the van

  • Strike box

  • Jamb reinforcer

  • 25 mm auger bit

  • Dry PTFE lubricant

  • Reinforced strike plate

Person seated at a wooden table examining a brass mortise lock body, with a tool roll, small lock parts and a mug. — Kennedy Park

Deadbolt Installation

What affects the quote

  1. Rental and building requirements

    Matching a building's keyway, providing keys to a landlord or fitting a lock that a condominium corporation specifies can add hardware or bench work, each shown as its own item.

  2. Removing and disposing of the old hardware

    Some visits end with the old deadbolt and strike left with the homeowner, and others ask for it to be removed and hauled away. Taking the old hardware away adds a small amount of time and is agreed before the new deadbolt goes in.

  3. Travel to the property

    Distance and access are part of any call-out: a house on a suburban street and a rural property down a long road involve different driving time, and the quote says so.

What to have ready

  • Has the door or frame ever been forced, or are any screw holes stripped?
  • Is there glass in the door or a sidelight beside it within arm's reach of the lock?
  • Is the door solid wood, steel-clad or fibreglass, and roughly how thick is it?
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Deadbolt Installation: questions

Questions
Do I need a deadbolt on the door from the garage into the house?

It is worth having. The door between an attached garage and the living space is in practice often the softest way in, since a garage door left open leaves a passage knob as the only barrier. A thumb-turn deadbolt there costs a few minutes a day and closes that gap.

The door has to be pulled before the old bolt will lock. Will a new one fix that?

The new bolt will only lock as smoothly as the door and frame let it, so the locksmith deals with the cause as part of the installation. A door that has sagged on loose hinges gets longer hinge screws or a shim, thick weatherstrip is trimmed, and the strike is set from the bolt's actual position with the door closed. The pocket is bored deep enough for a full throw. Afterwards the bolt should slide with fingertip effort.

Can the new deadbolt use the same key as my other doors?

Usually, yes. If the new lock shares a keyway with your existing cylinders, the locksmith repins it on the bench so your current key operates it, and nothing changes on anyone's ring. If the keyways differ, the other doors can be brought onto the new key instead. Say which key you want to keep before the hardware is chosen, because keyway is part of picking the lock.

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Deadbolt Installation near you

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