Change or rekey · Wilfrid
Deadbolt Installation in Wilfrid
The front door has a handsome lever and a keyed knob, and that is all.
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.
How the visit goesYou bought a keypad deadbolt online and pulled the old one off, only to find the hole in the door is a different size and the bolt latch sits at a backset the new kit does not list. The door is now open and the box is on the counter.
Deadbolt Installation
How the visit goes
Where the bolt should sit on the door
On a door with no deadbolt yet, its height is not fixed by the manufacturer but by the door in front of you. The usual spot is 140 to 150 mm above the centre of the knob, which places the bolt near the strongest part of the lock stile and keeps both locks within one comfortable reach. The locksmith checks that this height misses any glass, decorative panel, hinge line or the wood block inside an insulated door, and that the frame behind that spot is solid rather than a gap between shims. If a storm door or screen door shares the opening, the bolt's thumb-turn and cylinder have to clear it as well.
Swapping an old deadbolt in place
When an existing bolt is being replaced, the work starts by backing out the two inside screws and lifting off both housings, then removing the bolt from the edge. The bore and backset are measured against the new hardware, and any difference is dealt with before the new bolt goes in: a larger bore for a smart deadbolt, a different faceplate shape, or a spacer for a thinner door. The new bolt, cylinder and thumb-turn go on in the usual order. The old strike comes off too, the pocket is deepened if needed, and a reinforced strike with long screws replaces it, so the upgrade happens on both sides of the gap.
Keys that open what they should
You leave with the keys sorted, whichever way you chose. If the new cylinder was pinned to your existing key, every ring in the house still works and the new door has simply joined the set. If it was set to a fresh key, you have a small bundle of new keys, cut from the pins rather than copied from a worn original, and a clear idea of which old keys no longer matter. Count them, decide who carries one, and test each in the new bolt before the locksmith leaves. A spare kept with a trusted neighbour or in a small lockbox is worth arranging on the same afternoon.
Deadbolt Installation
In the van
Single-cylinder deadbolt
Jamb reinforcer
Reinforced strike plate
Rekeying pins and key blanks
75 mm (3 in) strike screws
Deadbolt Installation
What affects the quote
Finish and trim style
Coated finishes built for salt and sun, matching trim for an existing handleset, and low-profile faces cost differently from a standard brass or nickel unit, and you choose the level.
Door and hinge corrections
A sagging door, loose hinge screws or thick weatherstrip are put right before a bolt is fitted, and that adjustment is quoted as its own line rather than folded into the lock.
Glass near the lock
A captive thumb-turn, laminated glass, security film or a relocated bolt height each carry their own cost, and the choice you make about glass shapes that part of the quote.
What to have ready
- Is there a storm door or screen door in the same opening?
- Have you already bought the hardware, and if so which model and does the template come with it?
- Does anyone in the household have trouble with small knobs or stiff thumb-turns?
Deadbolt Installation: questions
QuestionsDo 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.
Can a keypad or smart deadbolt be fitted instead of a keyed one?
Yes, and the preparation is the same. Many electronic deadbolts use the standard 54 mm bore and the same edge bore, so a door cut for a mechanical bolt often accepts one, and a keyed bolt fitted today can usually be swapped for a keypad later, subject to that model's own bore, backset and thickness needs. The locksmith checks door thickness against the model, fits a reinforced strike as usual, sets up codes with you and shows where the backup cylinder or battery terminals are.
Someone forced my door. Can the new deadbolt go into the same frame?
In most cases, yes. The locksmith examines the jamb for splits and stripped screw holes, glues and pins any cracked section, and fits a full-length jamb reinforcer under the strike so the new long screws bite into sound wood and the stud behind. A new pocket is bored to the correct depth. Where the jamb is beyond repair, replacing that section of frame is discussed before any lock goes on.
Related services
- Lock Replacement & UpgradeThe lever on the side door droops toward the floor and rattles in your hand.
- Vintage Mortise Lock ServiceThe old skeleton key still fits the keyhole, but it now needs a jiggle, a lean on the door and a little luck before the bolt moves.
- Smart Lock InstallationThe kids get home before you do and the spare key has been lost twice this school year.