How to Adjust Aluminium Bifold Doors

Why Adjustment Matters

Even a professionally installed aluminium bifold door may need adjustment over time. Shifts in the structure, seasonal expansion, or regular use can lead to issues like misalignment, difficult movement, or improper sealing. Thankfully, most adjustments can be done with basic tools—no need to reinstall the entire system.

This guide explains how to adjust your aluminium bifold doors for smooth, secure, and long-lasting performance.

Common Issues That Require Adjustment

Before you begin, identify the specific problem:

• Doors dragging on the track
• Misaligned or uneven panels
• Difficulty locking the doors
• Gaps between panels or the frame
• Noisy or stiff movement

Each issue points to a different area of adjustment—rollers, hinges, locks, or frame alignment.

1. Adjusting the Rollers
The rollers at the top and bottom guide the doors along the track. If your door drags or doesn’t glide smoothly:

• Locate the adjustment screws—usually found on the side or bottom of the door panel.
• Use an Allen key (commonly 4mm or 5mm) to turn the screw:
• Clockwise raises the panel
• Counter-clockwise lowers it
• Adjust in small increments and test after each turn.

This helps even out the doors so they run level and don’t scrape the floor track.

2. Realigning the Hinges
If the panels don’t fold smoothly or appear twisted:

• Loosen the screws on the hinge slightly
• Gently reposition the panel into place
• Re-tighten the screws while maintaining alignment
• Be cautious—over-adjusting can cause the doors to jam when opening or closing.

3. Correcting the Lock Alignment
Misaligned locks are common when doors shift. To adjust:

• Close the door and check where the lock bolt meets the keep (the frame slot).
• If misaligned, adjust the keep position by loosening its screws and sliding it slightly up, down, or sideways.
• Re-tighten and test the lock.
• Proper alignment ensures the door seals tightly and locks securely.

4. Fixing Panel Gaps
Visible gaps between panels or between the door and the frame can cause draughts or security concerns. Solutions include:

• Re-check roller and hinge adjustments
• Inspect the frame—uneven installations can create pressure points
• Use foam seals or weather stripping to fill minor gaps
• If gaps persist after adjustments, the door may need to be rehung, or the frame may require correction by a professional.

Pro Tips for Smooth Adjustments

• Always adjust with the door fully closed to maintain alignment.
• Make small changes and recheck after each tweak.
• Lubricate moving parts with a silicone-based spray—not oil—to avoid grime build-up.
• Ensure all screws and fixings are tight once finished.

Tools You’ll Need

• Allen keys (various sizes)
• Screwdrivers
• Spirit level
• Lubricant (silicone spray)
• Measuring tape

These simple tools are often all you need to restore your aluminium doors to optimal condition.

When to Call a Professional
While most adjustments are DIY-friendly, you should consult a professional if:

• The frame appears warped or water-damaged
• Adjustments don’t solve the problem
• Glass panels seem loose or unstable
• Structural issues, especially with exterior doors, are better handled by experts.

Final Thought

Regularly adjusting your aluminium bifold doors keeps them working like new—quiet, smooth, and secure. Whether it’s a small hinge tweak or a roller height adjustment, the payoff is in the daily convenience and peace of mind these doors provide.