Change or rekey · Maryhill
Lock Replacement & Upgrade in Maryhill
The keys the seller handed over came in a sandwich bag: six unlabelled copies for two locks of different makes from different decades.
In plain words
A replacement lock has to fit holes that already exist, and that is where the visit begins. The locksmith measures the backset, the distance from the door edge to the centre of the bore, which on most doors is 60 or 70 millimetres, checks the cross-bore diameter and edge-bore size, notes door thickness and handing, and looks at the strike cut-out. Most residential hardware is made to these standard preparations, so the new lock usually drops into place with no new drilling. Where a mortise lock or a thick door departs from the norm, filler plates, extension kits or a careful new bore bring the door up to standard.
How the visit goesThree teenagers, a dog walker, a cleaner and one house key that keeps going missing. You are tired of cutting copies and would rather give each person a code you can switch off, with a proper deadbolt behind it.
Lock Replacement & Upgrade
How the visit goes
How the old lock behaves in use
The locksmith works the existing hardware the way you do every day and watches for the tell-tale signs. A key that must be lifted or wiggled points to worn pins or a worn key. A knob that turns too far, or a lever that droops, suggests a tired spindle or spring. A latch that stays retracted, or a bolt that stops short, can be internal wear or something outside the lock altogether. Doing this with the door open first, then closed, separates faults inside the mechanism from faults in the fit of the door, and that distinction decides whether new hardware is the answer or part of the answer.
Installing a keypad or smart deadbolt
A smart lock is fitted like any deadbolt, then brought to life. The bolt and exterior keypad go on first, the interior module with its battery pack after, and the door is closed so the lock can learn where the bolt sits; a bolt that meets resistance in the strike is corrected before pairing, because a straining motor drains batteries and fails early. Codes are programmed for each person, auto-lock and sound settings are set to your liking, any phone or hub pairing is completed, and the mechanical override cylinder is tested with its key. Fresh batteries go in last.
A smart lock with its backup arranged
A keypad or smart deadbolt leaves the visit with codes set for each person, auto-lock and alerts configured, and any phone pairing confirmed while the locksmith is there to check it. You are shown the low-battery signal so you recognise it, and the type of battery the maker calls for. The mechanical override key is the piece to look after: keep it on a keyring or with a neighbour rather than inside the home it opens. A second person's code is set up before the locksmith leaves, so a flat phone or a forgotten code is never a reason to stand on the porch.
Lock Replacement & Upgrade
In the van
Handleset with matching deadbolt
Filler plates and thick-door extension kits
Manufacturer-approved cylinder lubricant
Knob or lever entry set
75 millimetre strike and hinge screws
Lock Replacement & Upgrade
What affects the quote
Door material and thickness
Wood, steel and fibreglass doors are drilled and fitted differently, and a door thicker than the standard 45 millimetres needs extension parts, so the door itself shapes part of the quote.
Special-order hardware
Most standard locks come from the van. A specific style, an unusual finish or a restricted system may need ordering, which affects scheduling and is noted in the quote rather than discovered on the day.
Condition of the old hardware
Hardware that comes off cleanly is one thing; painted-over trim, seized or stripped screws and a cylinder that has to be drilled out add time before the new lock can go on.
What to have ready
- Is there glass in or beside the door?
- Are you interested in a keypad or smart lock on any door?
- Is there a sliding patio door or French door to include?
Lock Replacement & Upgrade: questions
QuestionsHow long does a lock replacement take?
A straightforward like-for-like deadbolt or knob set on a standard door is often a matter of an hour or less including testing. Add time for a reinforced strike, for keying several locks alike and cutting keys, for a smart lock's setup and pairing, and for repairing a split jamb or adapting an older door. When several entrances are done together, the locksmith gives a realistic window before starting so you can plan the day.
Can a lever replace a knob on the same door?
Yes, and it is a common change for anyone who finds a knob hard to grip. Levers use the same bore and backset as knobs, so the swap is usually a direct fit. Levers are handed, so the locksmith checks which way the door swings and chooses or adjusts the lever accordingly. A keyed entry lever pairs well with a deadbolt above it, and interior passage and privacy levers complete the set.
How do I look after a new lock so it stays smooth?
Very little is needed. Whatever lubricant and interval the cylinder maker specifies, worked into the keyway with a few turns of the key, keeps the pins free; using the wrong product collects grit instead of helping. Wipe salt off exterior hardware during winter melts. Snug the hinge and strike screws each spring and fall as the door moves with humidity. Cut spare keys from a crisp original rather than a worn copy.
