Short answer: the cloth decides the result far more than the spray does. Choose a good-quality microfibre cloth that takes dirt into the fibres rather than pushing it around the glass, with a neatly stitched edge so no lint is left behind. Work with it lightly damp, then dry off with a second, completely dry cloth. Nothing is left to dry into streaks.
Cleaning windows looks easy, but anyone who has battled streaks, lint or haze knows there's a knack to it. Here's why material, fibre and technique together make the difference.
Why is glass so unforgiving?
Glass shows up everything. Grease, dust and mineral deposits cling fast and leave a visible film behind if you tackle them the wrong way. And the culprit usually isn't the spray but the cloth: the wrong one spreads dirt about instead of lifting it away.
It's rarely your technique
If you see streaks after cleaning, that's almost never down to how you polish.
The material in your hand decides whether dirt is lifted away or simply moved about. Change the cloth and the result changes with it.
What does microfibre do differently on glass?
A good-quality window cleaning cloth is usually microfibre. That isn't a marketing word but a technical advantage. Microfibres are extremely thin and draw dirt and moisture deep into the weave. The fibres hold on to the dirt instead of pushing it around the glass.
In practice that means less rubbing, fewer streaks and a cleaner pane in fewer strokes. It saves you time, and it saves you the frustration.
How do you keep lint off the glass?
Lint gets left behind when fibres work loose, or when the cloth simply isn't made for smooth surfaces. So look closely at the edge stitching and at how densely the fibres are packed. A well-finished cloth leaves nothing behind, not even when you buff it dry. On windows that matters, because every stray fibre shows up against the light.
What to look for in a window cloth
- A neatly stitched edge, so no fibres work loose
- Densely packed fibres, so dirt stays inside the cloth
- Made for glass, not for general cleaning
Should the cloth be dry or damp?
How damp the cloth is tends to get overlooked. Most people make it far too wet, which leaves water behind that dries into spots. Work with it lightly damp instead. That loosens the dirt and takes it straight into the fibres, with no water to spare.
For drying off, use a second, completely dry cloth. The iZi-Dry Towel M, 60 x 40 cm is a pleasure for that, because it dries a whole window in one sweep. It gives you maximum clarity and stops the minerals in tap water showing on the glass.
What does this mean for cost and longevity?
A quality cloth survives dozens of washes without losing its bite. That makes it cheap to run as well as kind to the planet. Disposable wipes and kitchen roll create waste and rarely give you a streak-free finish.
Wash your cloths without fabric softener and they keep their absorbency. Washing with iZi-Wash Sheets leaves no residue in the fibres.
What difference does it actually make?
A good window cloth changes the whole job. The glass feels smoother, the view is sharper and it takes less effort. Most people only really get it once they've worked with the right material.
Streak-free windows aren't down to luck, but to knowing what you're doing and having the right kit. For a surface-by-surface guide, have a look at cleaning windows streak-free.
Window cleaning cloths: your questions answered
Which cleaning cloth is best for windows?
A good-quality microfibre cloth with a neatly stitched edge and densely packed fibres. It takes dirt into the weave instead of pushing it around, and leaves no lint on the glass.
Why do I get streaks on my windows?
Usually it isn't the spray but the cloth. The wrong cloth spreads dirt across the glass instead of lifting it away, and whatever stays behind dries into a visible film.
Should the cloth be wet or lightly damp?
Lightly damp. Most people make it far too wet, which leaves water behind that dries into spots. A lightly damp cloth loosens the dirt and takes it straight into the fibres.
Why do I need a second dry cloth?
For drying off. That second cloth gives you maximum clarity and stops the minerals in tap water showing on the glass.
How do I keep lint off my windows?
Choose a cloth made for glass rather than for general cleaning, and look closely at the edge stitching and the fibre density. Every stray fibre shows up against the light.
How long does a cloth like this last?
A quality cloth survives dozens of washes without losing its bite, as long as you wash it without fabric softener. That's what keeps its absorbency.
Why households choose iZi-Clean
- More than 300,000 households already clean this way
- 15,000+ reviews collected through Trustpilot, Judge.me and WebwinkelKeur
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- 98% of our customers are completely satisfied