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How to Fix a Door Knob

Holly Honeycutt

By Holly Honeycutt
Updated July 23, 2025

Do you have a door knob that's loose or a latch that sticks or won't catch? Fixing a door knob is an approachable DIY task that requires a screwdriver, lubricant and possibly replacement parts. We'll show you some common fixes, as well as tips and tricks to repair your door knob.

Tools and Materials

Tools

Materials

Note

Product costs, availability and item numbers may vary online or by market.

Keyed or Keyless Door Knob Repair

While intimidating at first glance, door knob repair is a beginner-friendly DIY project that can reduce the frustration caused by sticking, loose or non-latching door knobs. The key lies in understanding what you’re working with before you jump into the deep end.

Keyless door knobs offer the simplest fixes, as they typically consist of a spindle, latch and knob. Keyed door knobs are a bit trickier, thanks to a cylinder lock mechanism that contains pins and springs operated by the key. Unless you have a familiarity with cylinder lock components, you might save yourself time by calling a professional for repair or replacement.

In either keyed or keyless scenario, door knob repair is an important project to improve your home’s safety, function and aesthetics.

Problem: The Door Knob is Loose

To fix a loose door knob, remove the decorative plate – called the rose – and tighten the mounting screws that attach the assembly to the door itself. Replace the plate and tighten to create a snug secure fit against the door. This should stop the rattle.

Problem: The Door Knob or Latch Sticks

To repair a sticking door knob or latch, remove both sides of the door knob and inspect the spindle and latch for signs of wear or obstruction. Clear any dust or debris, apply lubricant and replace any worn parts, if needed. Reassemble the door knob and test the function.

Problem: The Door Latch Won’t Catch

Check the alignment of the latch and strike plate. If you’re unable to see the connection point, add a little lipstick to the latch. When the door is closed, turn the knob several times to force the connection. Open the door and you’ll see if you need to reposition the plate, create more space for the latch or add a shim behind the plate. Once finished, reassemble and test the catch.

When to Replace the Door Knob

Sometimes, it’s better to start from scratch with a new door knob that upgrades your home’s aesthetic. How will you know when it’s time to replace your door knob instead of making a repair?

  • The internal parts are severely worn, rusted or dirty beyond cleaning.  
  • Your door knob assembly has obsolete parts you won’t be able to replace.  
  • You're simply ready for a change.

For a quick look at how to replace a door knob or lock set, check out this video. From here, you can decide if this project is a DIY or hire.

Door Knob Maintenance for Longevity

No one likes to waste money or create additional chores for themselves. That’s why we follow the ""ounce of prevention"" prescription when it comes to your home’s door knobs. Create a reminder on your phone to pop up every 6-9 months that prompts you to:

  1. Remove the knob and clear out dust and build up with a rag or compressed air. 
  2. Lubricate the moving parts. 
  3. Reattach and tighten the screws on the assembly.

A consistent, slow-and-steady approach will help you stay ahead of replacement.

Conclusion

At this point you should have a basic understanding of door knob repair and maintenance: remove the knob, clean or lubricate the moving parts, tighten the screws and ensure alignment with the strike plate. If you know that it’s time to replace the door knob, look at the different types of door hardware and their usage. We also offer a step-by-step guide for lock set replacement.

With a little preparation and patience, you can repair or replace a troublesome door knob with help from Lowe’s. For more DIY and Ideas, check out our Hub Page.