You press the button and the door starts to rise. Then one side jumps ahead of the other. The bottom edge tilts, the whole door looks crooked, and you hear a scrape or a pop on top of it. That’s a bad way to start a morning.
An uneven garage door is almost always a sign that something is worn, loose or bent. Cables, rollers and tracks cause most of it, and springs cause some of the rest. Cold Colorado winters are hard on garage door parts, so it helps to know what you’re looking at.
Signs Your Garage Door Is Uneven
- One side sits higher than the other while the door moves
- The door looks crooked or tilted when it’s closed
- A gap shows along the bottom edge or at one corner of the floor
- You hear scraping, popping or grinding
- A cable hangs loose or looks frayed
- The opener strains or stops partway
Why Is My Garage Door Uneven When Opening? Common Causes
| What you see | Likely cause | Safe to DIY? |
|---|---|---|
| One side rises faster | Stretched, frayed or slipped cable | No |
| Door jerks or tilts | Loose drum or worn bearing | No |
| Door feels heavy or drops when lifted halfway | Weak or broken spring | No |
| Scraping or popping | Worn rollers or bent track | Light cleaning only |
| Gap at the floor when closed | Uneven slab or bent bottom section | Depends |
1. Stretched, Frayed or Slipped Cables
Two cables run from the bottom corners of the door up to drums on the torsion bar. They lift both sides together. If one cable stretches, frays or slips on its drum, that side ends up longer. The shorter side lifts first and the door tilts.
This is one of the most common reasons a door goes crooked. It’s also one of the riskiest to fix. The cables carry the weight of the door and are tied to spring tension, so a snapped one can drop the door fast. A loose drum or a worn bearing on the shaft can cause the same tilt. Leave these to a pro and book garage door repair right away.
2. Weak or Broken Springs
Springs do the heavy lifting. When one weakens or breaks, the door gets heavy and the opener has to fight it. On a door with two springs, one failing can make the door rise unevenly. It may also stall halfway or come down hard.
Springs wear out after thousands of cycles, so an older door is more likely to have a tired one. They hold a lot of force, and handling them wrong can cause serious injury. If the door feels heavy or you can see a gap in a spring, stop and call. A broken spring replacement is not a driveway project.
3. Worn Rollers and Bent Tracks
Rollers guide the door up the tracks. When one cracks, wears flat or sticks, that side drags. Dirt and dry grease do the same thing. A bent track or a loose track bracket makes the door rub and shift sideways. A bump from a car or a bike can bend a track in a second.
You can wipe the tracks with a dry cloth and look for loose bolts. Don’t try to bend a track back, and don’t force a stuck door. That usually makes the bend worse. Cold mornings can stiffen old grease too, so rollers may drag more in winter.
4. Damaged Panels, Hinges and Brackets
Sometimes the damage is in the door itself. These are the usual spots:
- Bent bottom panel: pulls the door out of line
- Loose or cracked hinges: let sections sag
- Damaged bottom bracket: holds the cable and sits under tension
- Old or warped door: may no longer sit square
If the door is old, warped or badly bent, garage door installation may cost less over time than repeat fixes.
5. Uneven Floors and Colorado Soil
Sometimes the door is fine and the floor is the problem. If the slab dips or heaves, one side of the door lands higher than the other when it closes. You’ll see a gap at one corner. Front Range soil swells and shrinks with moisture, and that can move a garage slab over time.
A door that rises level but gaps when closed often points to the floor. A door that tilts while it moves points to hardware. That clue is worth passing on to the tech. A bad slab may need a concrete fix, and the door may need adjusting to match it.
Uneven Door or Heavy Door? Alignment vs Balance
| Features | Alignment problem | Balance problem |
|---|---|---|
| What it means | The door travels unevenly in the tracks | Spring lift doesn't match the door's weight |
| What you notice | Tilt, one side higher, jerking | Heavy door, slams down, won't stay halfway |
| Usual parts | Cables, drums, rollers, tracks | Springs |
| Opener strain | Sometimes | Often |
What You Can Safely Check
- Stop using the opener as soon as you see the tilt.
- With the door closed, look at both sides. Compare cable slack and the gap at the floor.
- Look along the tracks for dents, gaps or loose bolts.
- Check the rollers for cracks or flat spots, without touching the cables or springs.
- Take a photo of the problem so the tech can see it before the visit.
How to Prevent an Uneven Garage Door
Most crooked doors start as small problems that go unnoticed for months. A little seasonal garage door maintenance catches wear before one side drops. It also takes strain off the opener and the springs.
- Clean the tracks: Wipe them with a dry cloth. Don’t grease the track itself, because grease collects dirt and makes rollers stick.
- Lubricate moving parts: Apply garage door lubricant to hinges and roller bearings twice a year. Skip the springs and cables.
- Test the safety sensors: Make sure the photo eyes at the bottom of the tracks are clean and lined up. A misaligned sensor can make a door stop or reverse partway.
- Watch for opener strain: If the motor groans, hesitates or runs longer than usual, get it checked. A tech can handle opener repair before a small fault turns into a stalled door.
- Book a yearly tune-up: A pro can check cable tension, spring balance, drum position and hardware tightness. Do this before winter, when cold weather makes weak parts fail sooner.
- Mind the door’s balance: A door that feels heavier than it used to, or won’t stay halfway, is out of balance. Don’t test or adjust this yourself, since it involves the springs.
A tune-up costs far less than repairing a door that has been running crooked all season.
When to Call a Pro
Call a tech at +1 719-497-2491 if a cable looks loose, the door stays crooked after you clear the tracks or you hear grinding. The same goes for a door that stalls halfway. If it’s stuck or hanging off one side, treat it as an urgent emergency service call and keep kids and pets away.
For most uneven doors, one repair visit finds the cause and fixes it. Homeowners in Denver and nearby areas can book same-day help.
Get Your Garage Door Moving Evenly Again
An uneven door has a cause, and it’s usually a cable, a roller or a track. Springs and an uneven slab come up less often. The longer you run a crooked door, the more strain you put on the parts that are still good.
If you’re in Denver, Aurora, Littleton, Greenwood Village or anywhere else in Colorado, the team at Pops Garage Door can look at the door and find the cause. They’ve worked on garage doors in the area for over 20 years. Stop using the opener first, and let them handle the springs and cables.
Is your garage door crooked or uneven?
Call Pops Garage Door at +1 719-497-2491 for same-day service in Aurora, Denver, Littleton, Greenwood Village and nearby areas. A technician will find the cause and give you a clear quote before any work starts.
