Who else has a key to your house?

What a rekey actually is

Most people picture us unscrewing your deadbolt and screwing a new one on. That is not what happens, and it is not what you want.

Inside the deadbolt is a cylinder, and inside that is the plug — the brass barrel your key slides into. Above the plug sits a row of chambers, each holding two pins on a spring: a bottom pin the key touches, and a driver pin above it. With no key in, the springs push the drivers down across the gap between plug and housing. That gap is the shear line, and a pin crossing it means the plug cannot turn. That is the whole trick of a lock.

Your key is instructions for that pin stack. Each cut is a depth; the sequence of depths is the bitting. The right key lifts every bottom pin exactly high enough that the joint between bottom pin and driver lands flush with the shear line, all at once. Nothing crosses the gap, so the plug spins and the bolt throws.

To rekey we pull the cylinder, take the plug out, dump the old bottom pins and drop in a new set at different heights — a new bitting — then cut a key to match. Your old key now lifts those pins to the wrong heights, the joints never reach the shear line, and the plug will not budge. Not harder to turn. Will not turn.

The hardware never left the door. The finish still matches, the bolt lands in the same strike. Only the pins changed.

Rekey or replace?

Rekey, in almost every case. If the lock works, re-pinning it does everything a new lock would do about who can get in. Three honest reasons to replace instead:

• The hardware is failing — cracked housing, a plug worn so loose the key wobbles, a bolt that no longer fully extends.
• You want a higher grade. Locks are graded BHMA/ANSI 1 through 3. Grade 3 is builder-grade, bought by the pallet, and it is what sits on most doors in this town. Grade 1 is commercial-duty. Going 3 to 1 is a real upgrade and it needs new hardware.
• The finish is gone. Twenty Florida summers eat brass down to green and grey. If it bothers you every day, replace it. We will not talk you out of it.

Everything else — a closing, a move-out, a lost key, a bad breakup — is a rekey.

Key-alike: stop carrying four keys

Half the houses here have one key for the front, another for the back, a third for the Florida room slider and a fourth for the shed. Nobody chose that — the doors were done at different times by different people over thirty years. Since a rekey is just choosing a new bitting, we choose the same bitting for every compatible cylinder. One key, one ring. The plugs are already out, so it is the easiest win in the job.

What actually breaks on old Valparaiso hardware

Most "my lock is broken" calls in 32580 are one of five things, and only two of them are the lock.

• You have to lift the door to throw the bolt. Everyone blames the deadbolt. It is the door: it has dropped — hinge screws pulled, or the frame settled — so the bolt no longer meets the hole in the strike. Fixed at the hinges and the strike plate, not inside the cylinder. Constant on the older ranch houses.
• The key blank is worn round. Brass is soft. A key cut in the nineties and used twice a day has had its peaks sanded down by the pins themselves, and no longer lifts the stack high enough. The lock is fine — the key quit.
• The springs are tired. Cylinder springs weaken, pins stop returning cleanly, the key drags coming out. That is a re-spring, and it happens inside the rekey anyway.
• Salt air. Boggy Bayou and Toms Bayou put salt in the air every day of the year. It seizes latches, corrodes Florida-room slider hardware, and turns a smooth deadbolt into one you shoulder. Flushing and a dry lubricant — never a wet oil, it gums up and holds grit — brings most of them back.
• The strike plate was never set right. Somebody chiseled the mortise a hair off decades ago and the bolt has scraped the edge of the plate ever since.

Upgrades that are actually worth doing

Three-inch screws through the strike plate into the stud. The cheapest real upgrade there is, and almost no house here has it. Break-ins are a kick, not a pick. When a door is kicked the bolt does not snap — the jamb splits, because the screws in the box are three quarters of an inch long and bite nothing but thin trim. Swap them for 3-inch screws that reach the framing stud and the kick has to break the house instead. First thing we do on any rekey where the customer lets us.

A real deadbolt with a full one-inch throw. A spring latch on a knob is a convenience, not a lock — it shims with a card. A deadbolt puts a solid inch of steel into the frame and gives a card nothing to work with.

Reinforce the frame, not just the lock. The frame is the weak point, not the lock. A jamb reinforcement plate, longer hinge screws and a properly anchored strike beat any lock you can buy.

Smart locks, honestly

They are genuinely good at one thing: codes you hand out and then revoke. For a landlord with turnover, that is real value and we install them gladly. They are not a security upgrade on their own. A smart lock still throws a bolt into a frame, and if that frame is held by three-quarter-inch screws it does not matter how clever the keypad is. Put a solid deadbolt and a reinforced strike behind it or you bought an app, not a lock. And know the failure mode: a dead battery is a lockout. Keep a mechanical key somewhere outside the house.

Rentals and turnover

If you own rental property here, rekey between every tenant. Not "collect the keys" — rekey. You cannot know how many copies were cut during a two-year lease, and "they seemed nice" is not a security posture. This is where a code lock earns its keep: every turnover becomes a code change instead of a service call, and the AC company gets a code that expires. Over a few tenants it pays for itself — and we still put a real deadbolt and 3-inch screws behind it, because the physics have not changed. More doors than that, see our commercial and property-manager work.