Change or rekey · Heidelberg
Deadbolt Installation in Heidelberg
The front door has a handsome lever and a keyed knob, and that is all.
In plain words
Replacing an existing deadbolt is usually a matter of matching rather than cutting. The locksmith measures the cross bore, the edge bore and the backset, checks the door thickness, and picks a bolt that drops into the holes you already have. Where the old lock was a builder-grade unit, the replacement can step up to a heavier grade with a hardened bolt, a free-turning collar around the cylinder and a low-profile face that gives a wrench nothing to grip. The old strike is checked against the new bolt's instructions, and where it calls for it, a reinforced strike and long screws go in while the door is already apart.
How the visit goesThe bolt on the front door is keyed on both sides. Getting out at night means finding the key in the dark, and with a toddler in the house you have decided the inside should turn by hand. You want it done properly, not just swapped.
Deadbolt Installation
How the visit goes
How the door hangs and closes
Before a new bolt goes in, the door has to close properly on its own, so the locksmith swings it a few times and watches. A door that drops on tired hinges, binds against thick weatherstrip or has to be pulled to latch will put a new deadbolt out of line the moment the season changes. Hinge screws are tested for grip, the gap around the door is read for evenness, and the existing latch is checked against its strike. Small corrections here, such as a longer hinge screw into the framing or a trimmed weatherstrip, are made first so the deadbolt can be set to a door that sits square and stays there.
Assembling the cylinder and thumb-turn
The outside housing goes on first, with its tailpiece threaded through the slot in the bolt cam and its mounting posts through the matching holes. Any plastic alignment bracket that ships with the lock is used on a 54 mm bore and removed on a smaller one. The inside thumb-turn plate is set against the door and the two long tapered screws are driven through it into the outside housing, snug rather than crushed, so the housings pull tight to the door without distorting the mechanism. The locksmith turns the thumb-turn before the door is closed to confirm the bolt throws its full length and returns without a catch.
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
Bolt faceplate or drive-in collar
Dry PTFE lubricant
Single-cylinder deadbolt
Deadbolt Installation
What affects the quote
Mechanical, keypad or smart lock
Electronic deadbolts carry a different hardware line and add setup time for codes, pairing to a phone and a walk-through, all of which appear as their own entries.
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.
Keying alike or a fresh key
Pinning the new cylinder to your existing key, or setting several doors to a new key, is bench work quoted per cylinder, plus the number of keys you ask to have cut.
What to have ready
- Is there a storm door or screen door in the same opening?
- Do you own the home, rent it, or manage it for someone else?
- 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.
I just moved in. Should the new deadbolt be keyed to a new key?
It is a good moment for it. Nobody knows how many copies of a previous owner's key exist, so pinning the new bolt, and the rest of the exterior doors, to one fresh key retires all of them at once. Lock manufacturers list a move as one of the main reasons to rekey. You come away with a known number of keys, each tested in every door it is meant to open.
How do I look after a deadbolt once it is installed?
Very little is needed. Each spring and autumn, lock the door from inside and feel whether the bolt still goes home without the door being pulled; if it hesitates, the door has moved with the season and a small strike adjustment restores it. Whatever lubricant the lock's own maker specifies keeps it smooth, often a dry PTFE or graphite type in the keyway and along the bolt, though some cylinders are meant to be serviced with oil. In winter, wipe road salt off the outside trim to protect the finish.
Related services
- Lock Replacement & UpgradeThe keys the seller handed over came in a sandwich bag: six unlabelled copies for two locks of different makes from different decades.
- Vintage Mortise Lock ServiceSomeone painted the door years ago without removing the hardware.
- Smart Lock InstallationHalf the evenings someone asks whether the back door got locked, and nobody is sure.