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Fix a French door that will not align

We'll check hinges, meeting stile, threshold, and frame—then fix loose screws, shim hinges, or adjust the astragal—or tell you when to call a pro.

Troubleshooting · Home maintenance
20–40 min
What you'll need
  • Screwdriver (Phillips and flathead)
  • Thin cardboard or wood shims (if hinges need adjustment)
  • Paraffin wax (candle) or silicone spray (optional)
  • Nail set or screwdriver (to remove hinge pins)
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Steps

Goal: Confirm where the panels misalign, then rule out hinge issues before isolating astragal or threshold problems.

  • Close both French door panels and look at the gap between them and the frame.
  • Note whether the top, bottom, or meeting stile (where the two doors meet) is misaligned.
  • Good: You see where the misalignment occurs—proceed to Check hinges.
  • Bad: The latch does not engage—different problem; see Fix a door that will not latch.

Check hinges

Goal: Fix loose hinges or bent pins so both panels swing freely and align.

  • Open each panel and lift up on the handle. If either panel moves up and down, the hinges are loose. Tighten all hinge screws on both panels with a screwdriver—use the longest screws that fit.
  • Remove a hinge pin from each panel by tapping it up from the bottom. Check for rust, bends, or wear. Replace with matching pins if damaged.
  • Good: Both panels swing freely after tightening or replacing pins—you may be done.
  • Bad: One panel still sags at the meeting stile—proceed to Shim hinges.

Shim hinges

Goal: Raise a sagging panel by shimming the hinge so both panels meet evenly.

  • If one panel sits lower than the other at the meeting stile, shim the hinge on that panel: remove the hinge from the jamb, add a thin cardboard or wood shim behind the hinge leaf on the side that raises the door, reinstall.
  • Adjust both hinges on the sagging panel if needed. Test the alignment.
  • Good: The meeting stile aligns when both panels close—done.
  • Bad: Still misaligned—proceed to Meeting stile and threshold.

Meeting stile and threshold

Goal: Check the astragal and threshold so the panels meet and clear the floor.

  • Look at the astragal (the strip where the two panels meet). Tighten any loose screws. If adjustable, move it so the panels meet evenly.
  • Check the threshold where the doors meet the floor. A warped or settled threshold can push one panel up or cause binding. Adjust if possible.
  • Good: The panels align and clear the threshold—done.
  • Bad: The astragal or threshold is warped or damaged—call a carpenter or handyman.

When to get help

Call a carpenter or handyman if:

  • The frame is warped.
  • The doors are heavy commercial-grade or have large glass panels.
  • You have tried tightening hinges, replacing pins, and shimming and they still will not align.
  • The threshold or frame has shifted significantly.

Do not force misaligned doors—it can damage the frame or hinges. For related fixes, see Fix a door that sticks or Fix a door that will not latch.

Verification

  • Both panels meet evenly at the meeting stile when closed.
  • No binding at the top, bottom, or center.
  • Hinge screws are tight and neither panel shifts when you lift it.
  • Both panels swing freely through their full range and close smoothly.

Escalation ladder

Work from the device outward. Stop when the problem is fixed.

  1. Confirm symptom Note where the panels misalign—top, bottom, or meeting stile.
  2. Hinges Tighten loose screws; replace bent or corroded hinge pins on both panels.
  3. Shim hinges Shim the hinge on the sagging panel to align the meeting stile.
  4. Astragal and threshold Adjust or tighten the astragal; check the threshold for warp or settling.
  5. Call a pro Warped frame, heavy doors, or repeated failures—call a carpenter or handyman.

What to capture if you need help

Before calling support or posting for help, have these ready. It speeds everything up.

  • Where the panels misalign (top, bottom, meeting stile)
  • Whether hinges are loose or pins are bent on either panel
  • Whether the astragal or threshold is worn or misaligned
  • Steps already tried

Do the French door panels misalign when closing?

Close both panels and look at the gap between them and the frame. Note where the misalignment occurs—top, bottom, or meeting stile.

Close both panels. Yes: They misalign at the top, bottom, or meeting stile—proceed to check hinges. No: If the panels align and close smoothly, you are done. If the latch does not engage, that is a different problem.

Yes No

You can change your answer later.

Are the hinges loose or are the pins bent?

Lift each panel by the handle. If either moves up and down, hinges are loose. Remove a pin and check for bends or rust.

Lift each panel. Check hinge pins on both. Loose or bent: Tighten screws; replace bent or corroded pins. Good: Panels swing better—test alignment. Bad: Still misaligned—proceed to shim hinges.

Yes No

You can change your answer later.

Tighten hinges and replace pins

Tighten all hinge screws on both panels. Replace bent or corroded hinge pins. Reinstall and test. If the panels align, you are done. If one panel still sags, proceed to shim hinges.

Done

Does one panel sag at the meeting stile?

If one panel sits lower than the other, shimming the hinge on that panel can raise it.

Look at the meeting stile. One panel sags: Shim the hinge on that panel—add a thin shim behind the hinge leaf to raise it. Good: Panels align—done. Bad: Still misaligned—proceed to astragal and threshold.

Yes No

You can change your answer later.

Shim the hinge and test

Remove the hinge from the jamb on the sagging panel. Add a thin cardboard or wood shim behind the hinge leaf. Reinstall. Test. If the panels align, you are done. If not, try a thicker shim or check the astragal and threshold.

Done

Is the astragal or threshold misaligned?

The astragal is the strip where the panels meet. The threshold is at the bottom.

Check the astragal and threshold. Tighten loose screws. Adjust if possible. Good: Panels align—done. Bad: Warped or damaged—call a carpenter or handyman.

Yes No

You can change your answer later.

Adjust astragal and threshold

Tighten or adjust the astragal. Check the threshold for warp or settling. If adjustable, align both panels. If warped or damaged, call a carpenter or handyman.

Done

Panels align

Both French door panels meet evenly and close smoothly. No further action needed.

Done

No action needed or different problem

If the panels align and close smoothly, you are done. If the latch does not engage, that is a different problem—see the relevant guide.

Done

Call a carpenter or handyman

Call a carpenter or handyman if: the frame is warped; the doors are heavy commercial-grade or glass-panel; you have tried tightening hinges, replacing pins, and shimming and they still will not align; or the threshold or frame has shifted significantly. Do not force misaligned doors.

Done

Reviewed by Blackbox Atlas

Frequently asked questions

Why would French doors not align?
Common causes: loose hinge screws (one or both panels sag), bent or corroded hinge pins, frame or threshold settling, or a worn or misaligned astragal. Check hinges first—they cause most alignment issues.
Can I fix French door alignment myself?
Yes. Most alignment issues are fixed by tightening hinge screws, replacing bent hinge pins, or shimming hinges. If the astragal or threshold is worn, you may need to adjust or replace them. Warped frames or heavy doors may need a pro.
When should I call a pro for French door alignment?
Call a carpenter or handyman if the frame is warped, the doors are heavy commercial-grade or glass-panel, you have tried tightening and shimming and they still will not align, or the threshold or frame has shifted significantly.

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