Locksmith in Agincourt NorthOlder homes.
Original locks, still working.

Sometimes, and the visit answers it. A key that failed from its own fatigue in a clean, smooth cylinder says nothing against the lock. A key that broke because the pins were worn flat, the cap had loosened or the keyway was full of grit says the cylinder needs a service or a rekey. One that broke in a corroded, pitted plug is telling you the lock is due for replacement.

Aluminum storefront doors are attacked at the narrow stile, which bends under a pry bar, or at the hookbolt and glass. The locksmith straightens or replaces the damaged section where possible, fits a new narrow-stile deadbolt or hookbolt with its strike, and adds a latch guard or anti-pry astragal along the meeting edge so a bar has no purchase. Cores are rekeyed and codes reviewed. The inside release stays a single motion so the exit route is unchanged.

Residential deadbolts are graded under an industry standard in three categories, security, durability and finish, with letter grades from C through A, so a lock marked with three A grades has met the highest level in each. Heavier commercial-pattern bolts are graded 1, 2 or 3, with 1 the highest. The grades let you match hardware to a busy family door or an exposed side entrance without relying on the weight of the box.

Usually, yes. Most residential doors are prepared to standard sizes, a 54 millimetre cross bore and a backset of 60 or 70 millimetres, and most modern hardware adjusts between those backsets. The locksmith measures before choosing, so the new lock is matched to the door rather than the other way around. Where an older mortise lock or an unusual bore is found, filler plates, extension kits or a carefully jigged new bore bring the door to standard.