How to remove baby sick from a fabric blind
- DifficultyDifficult
- OutlookRarely removable
- MaterialFabric blind
- Reviewed7 September 2026
The short answer
Work dry wherever you can. Roller blind fabric is stiffened with a resin or PVC coating so it hangs flat and rolls straight, and wetting it softens that coating so the blind ripples and stops tracking. Lift solids off, blot with a dry cloth, and use an absorbent powder rather than liquid. Vertical slats can be unhooked and laid flat, which is much easier.
If it has just happened
Blot with a dry cloth, and hold a second cloth behind the fabric while you do it. On a roller blind the instinct to fetch a damp cloth is the thing that causes the permanent damage.
Heat can set this stain permanently
Do not use hot water, a tumble dryer, an iron or a steam cleaner until the mark has gone. Heat fixes this type of stain into the fibres and makes it far harder to shift.
Test on a hidden area first
Try any cleaner on a hidden part of the material first, such as a seam, an offcut, inside a hem or under a piece of furniture. Wait for it to dry and check for colour change before treating the visible mark.
Cleaning the mark is not the same as disinfecting
If the sickness came with a stomach bug rather than an ordinary posset, the surface may carry norovirus, which spreads easily and survives on hard surfaces. UK public health guidance is to wear gloves, avoid shaking contaminated laundry, wash affected laundry separately with normal powder at 60 C where the care label allows it, and disinfect compatible hard surfaces with a bleach based product afterwards. Do that after the stain work, not instead of it, and only where the material tolerates it.
Keep every kind of drying heat away until the mark has gone
Baby sick is mostly milk protein. Heat coagulates protein and locks it into the material, which is why a mark that would have washed out can become permanent after one hot wash, one pass with an iron, a hairdryer or a spell on a radiator. Cool or warm treatment, air drying, and a proper look in daylight before anything warm goes near it.
What you will need
- Disposable gloves Sickness that came with a stomach bug is a hygiene job as well as a stain.
- A spoon or blunt scraper For lifting solids off before any water is involved.
- Cold running water Cold first. Warm water starts to set milk protein into cotton.
- Biological laundry detergent What this is Protease enzymes break the milk protein apart. This is the main tool on cotton.
- A bowl or sink for soaking Long cool soaks do the work that a hot wash is not allowed to do.
Helpful but not essential
- An oxygen based stain remover For whites and colourfast items, against the yellowing that milk fat leaves.
Fresh baby sick on fabric blind
Everything useful on this material happens without any liquid being involved at all.
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Lift the solids off with the flat of a knife
Hold the blade almost flat and draw it across the surface rather than digging into it. Take what comes off straight to a bin.
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Blot without pressing
Press white kitchen roll on and lift it straight up. On blind fabric the aim is to take liquid off the surface rather than to push it about.
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Cover the mark in fine salt or a dry absorbent
A shirtmaker's own suggestion for a fresh mark is fine salt laid on to absorb it, left a few minutes and then brushed away. Leave it longer than that for something as wet as sick.
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Brush the absorbent away and reassess
A soft brush, worked with the weave. If the absorbent is heavily loaded, do it once more with fresh salt before deciding anything.
Dried baby sick on fabric blind
A dried mark on something that cannot be wetted is a job for a specialist, and the home part is preparation.
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Take off everything that will come off dry
Flex the fabric gently to crack the dried milk and brush the flakes away with a soft brush. This is genuinely helpful and it carries no risk.
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Do not be tempted to dab it with water
A damp patch is the thing that causes the permanent damage here, and it also makes a specialist's job harder rather than easier.
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Note what the stain is
If the mark has to come out and the blind is a roller, contact the supplier about replacement fabric rather than wetting it. If it is a vertical, unhook the affected slats and ask whether they are washable. If it is a roman blind, treat it as a curtain.
What not to use on fabric blind
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Washing it hot, tumble drying or ironing before the mark has gone
Baby sick is mostly milk protein and heat coagulates protein into the fibre. A 60 degree wash on a mark that has not lifted is the single most common way a removable stain becomes a permanent one, and the cleaning trade body's own advice is to keep the item out of the dryer until it is clean.
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Rubbing at the mark with a nail brush
Cotton takes firm handling, but a stiff brush breaks fibre ends and raises a fuzzy patch that catches the light and reads as a mark long after the stain has gone.
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Reaching for chlorine bleach on a coloured item
It strips dye in a patch and there is no way back. On white cotton it is an option, but an oxygen product does the same job on milk yellowing without the risk, and bleach must never meet vinegar or an ammonia cleaner.
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Wetting a roller blind
The stiffening that keeps the fabric flat is water sensitive. Once it has softened, the blind dries rippled, stops rolling straight and cannot be corrected.
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Scrubbing or folding a blackout blind
The opaque backing is a coating. Cracked, it lets pinholes of light through, which is far more visible than the stain was.
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Spraying any cleaner at a blind
It runs down the fabric and into the bottom bar, and on a roller blind it takes the stiffening with it.
White compared with coloured fabric blind
Blind fabric fades on the window side over years, so any area that is cleaned more thoroughly than the rest ends up looking different regardless of the stain. Blackout blinds have an opaque coating on the back that cracks if the fabric is folded or scrubbed, and the cracks then show as pinholes of light, which is far more noticeable than a mark.
If the mark is still there
Once the dry treatment has done what it can, stop and look at the blind in its normal position with the light behind it.
If a mark is still visible, weigh it against the alternative honestly. A rippled roller blind cannot be flattened and does not roll straight afterwards, so the fabric will need replacing. A faint mark does not.
Vertical and roman blinds give more options. Vertical slats unhook and can be laid flat and treated on both sides, and some are washable, which the supplier will confirm. Roman blinds are lined and behave like curtains, so the curtain approach of a barely damp cloth with a dry cloth behind applies.
When to stop and call someone
Get a blind specialist or the supplier involved rather than continuing if a roller blind has already rippled, if the mark is on a blackout backing, or if the blind no longer tracks straight. Rippled roller fabric is not repairable and replacement of that one blind is usually the honest answer.
Why baby sick behaves this way on fabric blind
A blind is fabric engineered to stay flat, and the engineering is the fragile part.
Roller blinds are stiffened
The fabric carries a resin or PVC treatment so it holds its shape and rolls evenly on the tube. Water softens that treatment, and the fabric dries wavy. A wavy blind does not roll straight, catches on the brackets and cannot be corrected. Replacement of the fabric is the only repair.
Blackout coatings crack
The opaque backing on a blackout blind is a coating rather than a fabric. Folding or scrubbing cracks it, and light then shows through as pinholes.
Vertical slats are the easy case
They unhook, lay flat and can be worked on from both sides, which removes almost every constraint on this page.
Roman blinds are curtains
Lined, sometimes interlined, and best treated with the same barely damp cloth approach.
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Sources
What we checked and when. Where a manufacturer instruction disagrees with anything here, follow the manufacturer.
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How to remove stains from baby clothes, Persil UK
manufacturer
UK manufacturer guidance to act quickly on formula, blot when immediate washing is impossible, rinse under cool water, soak for at least 15 minutes where the care label permits, pre-treat with detergent and then wash to the care label.
Checked 7 September 2026
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A guide to newborn laundry, American Cleaning Institute
trade body
Cleaning trade body guide to pre-treat breast milk, formula or spit-up with an enzyme stain remover, soak fresh marks for at least 30 minutes and older marks for several hours, launder, and keep stained items out of the dryer until the mark has gone.
Checked 7 September 2026
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How to remove baby formula stains, Purex Stain Lab
manufacturer
Manufacturer guidance identifying breast milk, formula and baby spit-up as protein stains, explaining the role of enzymes, and warning that the mark should be checked before any drying heat because heat sets what remains.
Checked 7 September 2026
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How to care for linen, FatFace
retailer
UK retailer care guidance that linen is washed in cold or lukewarm water at 30 C or lower to avoid shrinking, on a delicate or hand wash setting to reduce agitation, with a gentle detergent free of bleach and brighteners, that fabric softener coats the fibres and reduces breathability, and that bleach weakens linen fibres.
Checked 7 September 2026
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Norovirus: what to do and how to stop the spread, UK Health Security Agency
authority
UK public health guidance establishing that illness related vomit can carry norovirus, that contaminated laundry should be washed with normal powder at 60 C where the care label permits, and that compatible hard surfaces should be disinfected with a bleach based product.
Checked 7 September 2026