How-To Guide
Roller Blind Rolling Uneven? How to Fix a Crooked Roller or Zebra Blind
Does your blind hang lower on one side, roll crooked, or bunch up unevenly? Most uneven rollers and zebra blinds are a simple fit issue, not a broken product. Before assuming the worst, check the three most common causes below, in order — tube seating, chain tension, and bracket level — then how to tell if it's actually a worn mechanism.
Why roller and zebra blinds go uneven
An uneven blind almost always comes down to one of three things: the roller tube isn't seated squarely in its brackets, the operating chain has lost tension, or a bracket itself is mounted slightly out of level. Any of these can make the fabric wind on crooked, leave the hem bar tilted, or cause the blind to drift to one side each time it's raised. Work through them in order — most people fix the problem at step one or two.
- Tube not fully clicked into the idle-end bracket (most common)
- Chain or cord tension loose, worn, or twisted
- Mounting bracket slightly out of level or has shifted in the wall/frame
- Less common: worn clutch or spring mechanism inside the tube
Fix 1: Re-seat the roller tube
On most roller and zebra blinds, the fabric tube simply clips into a bracket at each end — a control (chain) bracket and an idle bracket. If the idle end has popped slightly loose, the tube winds off-centre and the blind looks crooked as soon as you lower it.
- Support the tube with one hand and gently pull the idle end away from its bracket
- Push it firmly back in until you feel or hear it seat, fully square to the bracket
- Run the blind fully down and back up once to let the fabric re-align on the tube
- If it pops loose again within a day or two, the bracket itself may be loose in the wall — check the mounting screws
Fix 2: Adjust chain or cord tension
A chain or cord that has stretched, twisted, or loosened at the tensioner can let the tube shift slightly with each use, which shows up as gradual unevenness rather than an obvious jam.
- Check the small chain tensioner bracket at the bottom of the loop — it should hold the chain snug against the wall or frame, not swinging loose
- Untwist the chain if it has spiralled, so both sides run parallel
- Operate the blind slowly a few times and watch whether the tilt appears gradually (tension issue) or is there from the first pull (bracket or tube issue)
Fix 3: Level the mounting brackets
On wider roller and zebra blinds especially, even a few millimetres of height difference between the left and right bracket is enough to make the whole blind hang crooked, no matter how well the tube is seated.
- Hold a small spirit level flat across the top of each bracket
- Measure from a fixed point (ceiling, window frame top) to each bracket at the same spot
- Loosen and re-set any bracket that's out of line before re-testing the blind
- This is worth checking first if the blind was uneven from day one, right after installation
When it's a mechanism fault, not a fit issue
If you've re-seated the tube, tightened the chain, and confirmed the brackets are level, and the blind still tilts, catches, or rolls unevenly, the issue is likely inside the tube — a worn clutch, spring, or gear that controls how evenly the fabric winds. This is a mechanism fault, not a repair we recommend attempting at home, since these parts are sealed and brand-specific. If the tilt keeps coming back on an older blind, it's often simpler and more cost-effective to replace that unit than to keep adjusting it. A free in-home measure lets one of our consultants take an honest look and tell you whether a fix, a single replacement blind, or an upgrade makes the most sense for your window.
