Why Is My Garage Door Higher on One Side Than the Other?

Why Is My Garage Door Shifted to One Side?

A garage door that has shifted to one side usually indicates a mechanical imbalance caused by a loose or broken cable, a worn or damaged roller, or a misaligned track. In some cases, a failing torsion spring can also contribute by creating uneven tension across the door. Stop using the opener immediately and inspect for slack cables, gaps in the spring, or visible track misalignment, as these components are under high tension and can be dangerous to repair without professional service.

Is a Shifted Garage Door a Balance or Alignment Issue?

A garage door that appears shifted to one side is most often a misalignment issue rather than a true balance problem. While balance relates to spring tension, a one-sided shift typically occurs when cables, tracks, or rollers are not moving evenly, causing the door to lift unevenly.

Common causes include:

• Loose or broken lift cables
• Worn or damaged rollers
• Bent or misaligned tracks
• Uneven torsion spring tension

 

Why Your Garage Door Might Look Crooked

If your garage door sits higher on one side, shifts when opening, or looks uneven when closed, the issue is rarely balance-it is misalignment. Many homeowners assume an uneven door means the springs are unbalanced, but in most cases, the problem comes from worn cables, loose drums, or damaged bearings. Understanding the difference between balance and alignment helps you know what kind of repair your door really needs.

Balance vs. Alignment: What Is The Difference?

Balance refers to how evenly the door’s weight is distributed and supported by the springs. A balanced door should stay in place when raised halfway and feel nearly weightless when lifted manually.

Alignment, on the other hand, refers to how evenly the door travels up and down the tracks. If one side is higher or lower than the other, the problem is not spring tension-it is the cables, drums, or bearings guiding the door unevenly.

When the door is misaligned, you might see one side sitting lower on the ground, hear grinding or popping noises, or notice the door shift sideways when opening.

Common Causes of a Misaligned Garage Door

1. Frayed or Stretched Cables

The springs act as the muscles of your system, and the cables act as the tendons. They work hand in hand. When one cable stretches or begins to fray, it becomes longer than the other, causing one side of the door to rise higher. This is a normal wear-and-tear issue and one of the most common causes of an uneven door.

2. Loose or Slipping Drums

Drums are the round wheels located at the ends of the torsion bar where the cables wrap and unwind. If a drum is not set flush against the bearing or begins to slip, the cable can roll unevenly. As the cable winds up incorrectly, it pulls one side of the door higher.

3. Worn or Failing Bearings

The bearings help the shaft and drums spin evenly. When a bearing wears down or shifts, it can cause the cable to sit at the wrong angle, leading to misalignment and uneven door movement.

4. Track or Panel Damage

If the door was accidentally hit by a vehicle or another object, the tracks or panels may bend, preventing the door from moving straight up and down. Even a slight bend can create extra friction, which forces the door to rise unevenly.

Why Does My Garage Door Shift to One Side When I Open It?

If your garage door jerks or shifts sideways during operation, it is usually due to:

• A loose or misaligned drum that is pulling unevenly.
• A stretched or frayed cable on one side.
• A bearing that has moved out of position.

When this happens, the cables roll unevenly on the drums, and one side of the door lifts faster than the other. Over time, this creates even more strain on the hardware and can cause the cables to snap if not corrected.

What Happens if a Cable Breaks

When a cable breaks, the entire door can drop to one side or become jammed in the track. The door will hang crooked, and trying to operate it will only cause more damage. The unbroken side still has full spring tension, which makes the system extremely dangerous to touch or move.

Never try to reconnect or rewind a garage door cable yourself. Proper cable replacement requires the spring tension to be released safely, new cables to be set on the drums, and the system to be re-tensioned correctly.

How We Fix a Misaligned Garage Door

At A1 Garage Door Service, we follow a detailed process to ensure both sides of your door are level, balanced, and operating smoothly.

1. Disconnect the opener and secure the door in place.
2. Safely release spring tension so cables and drums can be serviced.
3. Inspect and replace cables if they are frayed, stretched, or damaged.
4. Reseat and align drums so they sit flush against the bearings.
5. Replace worn bearings or hardware if necessary.
6. Re-tension the springs, test door travel, and verify full balance.
7. Reconnect the opener and perform a complete safety test.

When finished, the door should sit level, rise evenly, and close softly without noise or hesitation.

How Much to Fix a Misaligned Garage Door?

Because every system is slightly different, the total cost depends on which parts need to be replaced. On average:

• Garage door cables cost around 200 per pair.
• Garage door drums are slightly over 200 per pair.
• Labor and additional parts vary depending on the extent of the damage.

In some cases, if cables and drums are still in good shape, we can reuse them and simply replace worn bearings or reset alignment. For example, during a recent service call in Scottsdale, the cables and drums were fine, but the bearings had failed. Replacing those restored perfect alignment.

Why Misalignment Is Not the Same as Poor Balance

A door that sits crooked but feels light to lift is misaligned, not unbalanced. A door that feels heavy but still sits evenly is unbalanced. The two issues are often confused, but they require completely different repairs.

Balance problems come from the springs and affect how much weight the opener must lift. Alignment problems come from cables, drums, and bearings that affect how evenly the door travels.

Signs It Is Time to Call a Professional

• The door looks uneven or tilted.
• The cables appear frayed or loose.
• The door shifts sideways while moving.
• You hear grinding, popping, or scraping sounds.
• The opener is straining or stops partway.

Do not try to fix a crooked or misaligned door on your own. The cables and drums are under extreme tension and can cause serious injuries if handled improperly.

Keeping Your Garage Door Aligned in Phoenix

Most misalignment issues result from normal wear and tear, especially in homes where the garage is used several times a day. Scheduling annual tune-ups and safety inspections ensures that cables, drums, and bearings stay in proper condition and that the entire system remains level and quiet.

Final Thoughts

A garage door that is higher on one side or shifts while opening is almost always a sign of misalignment, not bad springs. The good news is that this is a fixable issue when handled by trained professionals. At A1 Garage Door Service, we inspect, align, and balance every component to ensure smooth, even movement.