Locks are the only mechanical device most of us use every single day and never service. A little lock maintenance once or twice a year keeps keys turning smoothly, prevents snapped keys and 11 PM lockouts, and stretches the life of good hardware by years — especially in Northwest Indiana, where lake-effect winters and humid summers work locks hard.
Listen to What the Lock Is Telling You
Locks rarely fail without warning. A key that needs a jiggle, a deadbolt you have to lean on the door to throw, a latch that grinds instead of clicks — these are early symptoms, and early is when fixes are cheap. Ignore them long enough and the ending is predictable: a key snapped off in the cylinder on a February morning.
Lock Maintenance Rule One: Use the Right Lubricant
Skip the cooking spray and be careful with all-purpose penetrating oils — wet lubricants feel great for a week, then collect dust and grit into a paste that gums the cylinder. Use a dry lubricant made for locks: graphite or PTFE-based. A puff into the keyway, run the key in and out a few times, wipe the key clean. Twice a year is plenty.
Check the Alignment, Not Just the Lock
Often the lock is innocent and the door is the problem. Wood doors and frames swell in humid Augusts and shrink in dry Januaries, shifting the strike plate so the bolt scrapes instead of gliding. If you must lift, push, or pull the door to lock it, the strike needs adjusting — a small fix that removes daily strain from both the lock and your patience.
When to Bring In a Locksmith
Call a professional when a lock stays stiff after lubrication, when the key works in one lock but not its twin, when the cylinder wobbles, or when hardware is simply decades old. A service visit can clean and adjust every door in the house in one pass — far cheaper than replacing locks that were never really broken.
Want every lock in the house turning like new before winter? Jacob’s Lock and Key serves Gary, Hobart, and all of Northwest Indiana, seven days a week from 7 AM to 11 PM. Call (219) 342-5595.
Last updated: 08/25/2026