How to fix a misaligned door and stop a sticky lock

There’s nothing more frustrating than trying to close a door that just won’t shut properly. Or, even worse, when your key won’t turn because the door bolt is not aligning with the strike plate. This isn’t just an inconvenience—it’s a security risk.

The good news is that a door lock not working is often a simple problem caused by a door lock misaligned with the door frame. This can happen due to seasonal changes in humidity, a house settling, or simply loose hinges.

The problem: Door lock misaligned

When a door shifts in its frame, even by a millimetre or two, the latch or bolt will no longer line up with the strike plate on the door frame. This is a common cause of a door latch not catching or a key that’s difficult to turn.

Here’s our simple, step-by-step guide to tackling the problem.

Quick DIY fixes

1. Check for loose hinges: Start with the simplest solution. Open the door and check all the hinges. If any screws are loose, use a screwdriver to tighten them. This can often be enough to pull a sagging door back into alignment.
2. Use a lubricant: A sticky lock might just need a little help. Spray a small amount of graphite powder or a silicone-based lubricant into the lock cylinder to see if it frees up the mechanism.
3. Adjust the strike plate: This is the most common fix for a misaligned door.
   • Find the mark: Use a piece of lipstick or a dry-erase marker on the tip of the bolt. As you close the door, the bolt will leave a mark on the strike plate, showing exactly where it’s hitting.
   • Unscrew and move: Unscrew the strike plate and, using the mark as a guide, move it slightly in the direction needed to get a perfect alignment. For a clean finish, you can use a chisel to expand the recess in the door frame.

When to call a professional locksmith

While these fixes can solve many common issues, it’s important to know when to call a professional. A door lock not working could be a sign of a more serious problem.

You should call a professional if:

• The door is significantly warped or swollen and can’t be easily fixed with minor adjustments.
• The issue is with the lock mechanism itself, and not the alignment.
• You’re dealing with a uPVC or composite door, which has a more complex multi-point locking system.
• You don’t feel confident in adjusting the door or using tools.

A trusted professional can provide a lasting solution by addressing the root cause of the misalignment or by expertly repairing or replacing the lock.

Ready to get started? With Rated People, you have the power to get it done. Find a trusted, local tradesperson today.