Lock Maintenance Tips: Keep Your Locks Working Like New

Why Lock Maintenance Matters

Like any mechanical device, locks need occasional care to function properly. Regular maintenance prevents:

• Stuck or jammed locks
• Key breakage inside the lock
• Premature lock failure
• Expensive emergency locksmith calls

The best part? Most maintenance takes just minutes and requires minimal tools.

Essential Lock Maintenance Tasks

1. Lubricate Annually

Locks need lubrication to prevent internal parts from binding. Use graphite powder or Teflon-based lubricant—never WD-40 for locks.

How to lubricate:

1. Spray a small amount into the keyhole
2. Insert and remove the key several times
3. Wipe off any excess around the keyhole
4. Test the lock several times

When to do it: Once a year, or if the key becomes hard to turn.

2. Clean Your Keys

Dirty keys transfer debris into the lock mechanism. Occasionally clean keys with:

• Rubbing alcohol on a cloth
• Mild soap and water
• Check for bent or worn keys (replace if damaged)

3. Check Strike Plate Alignment

Over time, doors settle and the strike plate may not align with the latch.

Signs of misalignment:

• Door doesn’t latch properly
• You have to lift or push the door to lock
• Lock is hard to turn

Fix: Loosen strike plate screws, adjust position, re-tighten. May need to enlarge the hole.

4. Tighten Loose Hardware

Door handles and locks can loosen with use. Check every few months:

• Tighten deadbolt screws
• Tighten handle/lever screws
• Check hinges for looseness

5. Inspect Weatherstripping

Weather affects locks. In Northern New Jersey winters:

• Check for ice buildup (thaw with warm water, not hot)
• Ensure weatherstripping doesn’t create excess friction
• Apply lubricant before cold seasons

Maintenance by Lock Type

Deadbolts

• Lubricate every 6-12 months
• Check alignment annually
• Replace if turn becomes difficult

Door Handles/Knobs

• Tighten set screws if loose
• Lubricate latch mechanism
• Clean with mild soap (avoid harsh chemicals)

Smart Locks

• Replace batteries proactively (before warnings)
• Update firmware when available
• Clean fingerprint sensors with microfiber cloth
• Check battery contacts for corrosion

Padlocks

• Especially important for outdoor padlocks
• Lubricate shackle and keyway
• Store indoors when possible to prevent rust

Car Locks

• Keep key fob batteries fresh
• Lubricate mechanical key backup
• Don’t force frozen locks (use de-icer)

When to Call a Professional

Maintenance can’t fix everything. Call a locksmith if:

• Key is stuck inside the lock
• Lock no longer turns at all
• Visible damage to the lock body
• Security upgrade is needed
• Rekeying is required (new home, lost keys)

DIY Maintenance Kit

Keep these on hand:

• Graphite lubricant or Teflon spray
• Small screwdriver set
• Microfiber cloths
• Rubbing alcohol
• Spare batteries for smart locks

Maintenance Schedule

One Pro Tip

Never force a stubborn lock. If a key is hard to turn, forcing it risks breaking the key inside. Lubricate first, and if that doesn’t work, call a professional before you’re locked out.

Due for a lock checkup? Our technicians provide thorough inspections and maintenance across Northern New Jersey. Schedule service to keep your locks in peak condition.