Most homeowners never think about their locks until one stops turning. But a little lock maintenance goes a long way — especially in Northwest Indiana, where lake-effect humidity, road salt, and grit off Lake Michigan work on your hardware all year. A few minutes of care each season can keep you from standing on your porch with a key that won’t budge.
Why Lock Maintenance Matters in Northwest Indiana
Locks are mechanical devices with small moving parts — pins, springs, and a cylinder that all need to move freely. Around Gary, Hammond, and the lakeshore towns, moisture and airborne dust slowly gum up those parts. Humid summers can cause wooden doors to swell so the bolt no longer lines up with the strike plate, and winter freeze-thaw cycles let moisture inside the cylinder where it can freeze solid. Regular attention catches these problems while they’re still easy fixes.
Clean and Lubricate the Cylinder Once or Twice a Year
Start by blowing out the keyway with a puff of compressed air to clear dust and debris. Then apply a small amount of a dry lubricant — graphite or a Teflon-based (PTFE) spray — directly into the keyway, insert your key, and turn it a few times to spread it around.
One thing to avoid: standard oil-based sprays like WD-40 as a long-term fix. They loosen things up at first, but the oily film attracts dirt and eventually leaves the cylinder stickier than before. Dry lubricants do the same job without the buildup.
Check the Door, Hinges, and Strike Plate
Many “lock problems” are actually door problems. If you have to lift, pull, or shoulder the door to throw the deadbolt, the door has likely sagged or swelled. Tighten the hinge screws, and look at where the bolt meets the strike plate — a strike plate that’s a hair out of alignment puts constant strain on the lock every time you use it. Adjusting it now prevents a broken key or a seized bolt later.
Inspect Your Keys, Too
Worn keys wear locks. If your house key looks rounded off, has hairline cracks, or needs jiggling to work, get a fresh copy cut from the original (not from another worn copy) before it snaps off in the cylinder. A key that’s starting to stick is an early warning sign worth taking seriously.
When to Call a Locksmith Instead
If a lock still sticks after cleaning and lubrication, turns but doesn’t throw the bolt, or feels gritty and loose, the internal parts may be worn out — and that’s a security issue, not just an annoyance. A locksmith can service or rekey the lock on the spot, often saving you from a full replacement.
Need a hand with a stubborn lock? Jacob’s Lock and Key is a licensed mobile locksmith serving Gary, Hammond, Merrillville, Crown Point, and all of Northwest Indiana, 7 AM to 11 PM, seven days a week. Call Jacob at (219) 342-5595 and keep your locks turning smoothly year-round.
Last updated: 07/14/2026