Quick Answer
The direct answer is good. The only slight refinement could be to explicitly mention checking for loose hinge screws *first* before even considering strike plate adjustment, as it's the simplest and most common fix.
Common Symptoms
Possible Causes
Step-by-Step Diagnosis
Step 1
Open the door and check all hinge screws (on both the door and the frame) with a Phillips screwdriver. Tighten any that are loose.
Step 2
Slowly close the door and watch carefully to see exactly where it rubs or makes contact with the frame first. Look for scuff marks.
Step 3
With the door open, operate the lock with the key and thumbturn. If it moves smoothly, the lock is likely fine. If it's stiff, the lock itself may be the issue.
Step 4
Close the door slowly and observe the alignment of the latch bolt with the hole in the strike plate. Note if it is too high, too low, or not centered.
Step 5
Inspect the strike plate for obvious signs of damage, bending, or loose screws. See if a previous owner has filed it down.
Step 6
If you have a wood door, compare its fit in different weather. If it only sticks during humid months, the cause is swelling.
DIY vs Professional Costs
| Repair Type | DIY Cost | Professional Cost | Time Required |
|---|---|---|---|
Tightening Hinge Screws & Basic Lube | $0-$15 | $75-$150 | 15-20 min |
Adjusting/Shimming Hinges or Strike Plate | $10-$30 | $120-$250 | 1-2 hours |
Sanding/Planing a Swollen Wooden Door | $20-$60 | $200-$500 | 2-4 hours |
Lock Mechanism Repair/Replacement (Mid-Grade) | $40-$150 | $150-$400 | 1-2 hours |
When to Call a Professional Locksmith
- If you see diagonal cracks in the drywall or brick around the door frame, which indicates a larger structural issue.
- If you've tried the basic DIY fixes (tightening screws, adjusting the strike plate) and the problem is still there.
- If the hinge screws are stripped and just spin in their holes, as this requires a more advanced fix.
- If the issue is with a high-security lock (like Medeco or Mul-T-Lock) that requires specialized tools and knowledge.
- If the door frame itself is rotten, split, or visibly out of square with the wall.
Prevention Tips
- Check and tighten all the screws on your main door hinges a couple of times a year.
- Make sure any wooden exterior doors are properly sealed with paint or varnish on all six sides, including the top and bottom.
- Once a year, use a puff of dry graphite powder in the lock's keyway and a shot of quality silicone spray on the hinges and latch bolt.
- Avoid slamming doors, as the repeated impact can loosen screws and misalign the frame over time.
Frequently Asked Questions
Related Guides
Keyless entry pad / Electronic lock keypad unresponsive or malfunctioning (no power, incorrect code not recognized, flashing lights) Troubleshooting & Fixes
Key is stiff to turn or hard to turn in a door lock, potentially indicating internal mechanism issues, lubrication needs, or foreign object interference. Troubleshooting & Fixes
Key Stuck In Car Ignition Troubleshooting & Fixes (2024 Guide)
Key stuck in your car's ignition and won't turn or come out? Our expert guide covers symptoms, causes, and step-by-step fixes for a stuck ignition key.
Key fob or car remote not working, including failure to lock/unlock doors, remote start malfunction, or vehicle not recognizing the key fob, often stemming from electronic or programming issues. Troubleshooting & Fixes
Car key fob not working? Learn how to fix lock, unlock, or remote start issues. Our guide covers battery replacement, reprogramming, and when to call a pro.
Basement Window Lock is Busted? Here's How to Fix It (The Real Way)
Basement window lock broken or just stuck? A 25-year vet locksmith shows you the real-world fixes, from simple lubricant to full replacement. Know when to DIY and when to call a pro.
Master Key Systems for Your House? (A Real Locksmith's Guide)
Thinking about a master key system for your home? A veteran locksmith explains the real-world pros, cons, and costs of getting rid of that giant key ring.
Need Professional Help?
Find top-rated locksmith experts in your area