How to clean roller blinds without taking them down: fabric, day-night and blackout

Roller blinds hang at the window for years without anyone thinking of cleaning them – until the light shines through and reveals dust, stains and a grey bottom edge. To clean roller blinds, you usually don't need to take them down: a vacuum cleaner, a damp sponge and a little patience are enough in most cases.

Spring, when the sun reaches further into the room and the windows are due for a clean, is the right moment. These five steps show how to gently clean fabric, day-night and blackout roller blinds – without water marks or warped fabric.

Why roller blinds get dirty – and why care is needed

A roller blind hangs right in the airflow between the window and the room. When you air the room and above the radiator, dust settles on the fabric; in the kitchen a light film of grease is added. Hands leave fingerprints on the bottom edge and the chain, while insects or condensation on the window cause spots and rings.

Blind fabrics are not ordinary curtains, though. Many are stiffened with a finish so that they hang straight and roll up neatly. Blackout and thermal blinds also have a coating on the back. Too much water, rubbing or harsh products can cause water marks, creases, shiny patches or cracks in the coating. So before you start, check the label or the manufacturer's care instructions.

1. Clean roller blinds safely: ladder and preparation

Pull the blind all the way down so you can reach the whole fabric. If it is mounted high above a window or balcony door, you need a safe way up. For cleaning, the Swiss Council for Accident Prevention (BFU) advises a stable stepladder with a safety bar instead of chairs or boxes and explains what to look for when buying one: deep, non-slip treads, non-slip feet and a lock that stops it folding up.

Position the ladder so that you don't have to stretch sideways, and move it once more rather than once too little. Lay an old cloth on the windowsill in case dust falls down.

2. Dust dry – the most important clean

For regular care, dry dusting is enough:

• Vacuum cleaner with an upholstery or brush nozzle on low suction, from top to bottom over the fabric. Hold the bottom of the blind lightly so it isn't sucked in.
• Soft duster or dry microfibre cloth for light layers of dust.
• Lint roller for pet hair and stray fibres, especially on dark fabrics.

With a day-night blind, vacuum in two positions: once with the opaque stripes on top of each other and once offset. That way you also reach the inner faces. If you do this every few weeks, you will rarely need to clean damp.

3. Treat stains in a targeted, gentle way

With stains, the rule is: as little water as possible.

1. Mix lukewarm water with a few drops of mild washing-up liquid or delicates detergent.
2. Dip in a soft sponge or a white microfibre cloth and wring it out well – it should be damp, not wet.
3. Test on a hidden spot to see whether the colour or coating changes.
4. Dab the stain from the outside inwards; don't rub.
5. Go over it with a second cloth moistened only with clean water so that no soap residue remains.
6. Soak up the moisture with a dry cloth.

It is better to treat a single stain gently several times than once with force. For large stains or delicate natural fibres, it can be better to dampen a larger area lightly and evenly so that no ring forms.

4. Look after coated blinds and the mechanism

Blackout and thermal blinds: dust them as you would a fabric blind. If necessary, wipe the coating gently with a barely damp cloth and pat it dry straight away. Never crease the fabric – creases in the coating will let light through later.

In the washing machine, a roller blind only belongs there if the manufacturer expressly allows it. Most blind fabrics lose their stiffness when washed and hang wavy afterwards.

The mechanism: wipe the cassette, side guides, bottom bar and chain with a slightly damp cloth. Don't let water run into the housing or spring, and don't oil anything unless the instructions say so. If the blind sticks or rolls up crooked, don't pull hard – check instead whether the fabric is wound on straight.

5. Dry properly and roll up again

After any damp treatment, the blind stays fully down until the fabric is completely dry. Open the window a crack or air the room briefly so the moisture can escape. Rolling up a damp blind risks stains, creases and, in the worst case, mildew spots.

Use the waiting time to clean the windows and frames – our guide on how to clean window frames shows how. For pleated and venetian blinds, see clean pleated blinds; for vertical blinds, see how to clean vertical blinds.

The most common mistakes

• Too much water: wet patches dry with a ring and can warp the fabric.
• Rubbing instead of dabbing: this roughens the surface and turns a stain into a pale, shiny patch.
• Machine washing without approval: the finish is lost and the blind hangs wavy afterwards.
• Rolling up damp: leads to mildew spots and creases.
• Balancing on a chair: high windows call for a stable ladder.

Priority Clean editorial teamOur cleaning team from Alberswil, Canton of Lucerne, shares hands-on experience from move-out, house, office and window cleaning across Central and Northwestern Switzerland.