Mold on a sofa or chair is worth taking seriously. Small patches of surface mildew can often be cleaned at home, but widespread or deep mold in the padding is usually difficult or impossible to remove fully. This guide focuses on doing the job as safely as possible and recognizing when to stop.
Is it safe to clean mold yourself?
For a small area of surface mold, many people clean it themselves with proper protection. Consider getting professional help, or discarding the piece, if:
- The mold covers a large area or has gone through to the padding.
- The furniture was soaked, for example by a flood or leak, and stayed wet for a long time.
- You have asthma, allergies, a weakened immune system or a lung condition, or you are pregnant, or a young child or older person lives in the home. Ask a health professional, and let someone else do the cleaning.
- The mold is on a large number of items or in the walls or structure around the furniture.
Health effects from mold vary from person to person, and this guide cannot assess your specific risk. If anyone develops breathing difficulty or other symptoms, seek medical advice.
What causes mold on fabric
Mold needs moisture, an organic material to feed on, such as dust, skin cells or fabric, and time. Common causes include spills that were never fully dried, humid rooms, leaks, furniture pushed tight against a damp wall, poor air circulation and storage in damp spaces such as basements or garages.
Protect yourself first
- Wear disposable gloves, eye protection and a well-fitted respirator rated for particles (such as an N95 or better), not just a loose cloth mask.
- Work outdoors if you can, so spores do not spread through your home. Choose a dry day.
- Keep children, pets and anyone vulnerable away from the area.
- Wear clothes you can wash right away, and wash your hands afterward.
Step-by-step cleaning
- Move it outside carefully, trying not to shake or disturb the mold. Cover surfaces on the way, if you can.
- Brush off loose mold outdoors with a stiff brush, gently, rather than scrubbing hard, which can push spores deeper.
- Vacuum with a HEPA-filter vacuum and a brush attachment. Standard vacuums can blow fine spores back into the air. Empty the canister or dispose of the bag outside, in a sealed bag, straight away.
- Check the care tag. The cleaning code (W, S, WS or X) tells you if water-based cleaners are safe. See how to spot clean upholstery for what the codes mean. An X code means no liquids.
- Spot test your cleaner in a hidden area.
- Clean lightly. Use a cloth dampened with your chosen solution (see below), blotting rather than soaking. Use a fresh section of cloth often, and dispose of the cloths afterwards or wash them in hot water if suitable.
- Rinse by blotting with a cloth dampened with plain water.
- Dry completely, as described below.
Which cleaners to use, and what never to mix
- Mild dish soap and water: A reasonable first option for water-safe fabrics.
- White vinegar: Often recommended, diluted, for light mildew. It is mildly acidic, so test it first, as it can affect some dyes and fabrics.
- Rubbing alcohol (isopropyl): Some guides suggest it for mold on fabric because it evaporates quickly. It can remove color from some fabrics, and it is flammable, so test it, use it sparingly and keep it away from flames and heaters, with good ventilation. It is not guaranteed to kill all mold or remove stains.
- Dawn and vinegar: Mixing dish soap and vinegar is a popular household cleaner. It can be used on some fabrics after testing, but it does not guarantee that all mold is killed.
- Bleach: Avoid it on upholstery. It can permanently discolor and weaken fabric, and it is not effective at reaching mold in porous padding.
Chemical mixing warning: Never mix bleach with ammonia, or bleach with vinegar or other acids. These combinations can release toxic gases. Do not combine different cleaners in one bottle, and if you have used one product, rinse before trying another. Use only one product at a time and ventilate the area.
Drying
Moisture is what feeds mold, so thorough drying is essential.
- Dry the furniture outdoors in the shade or in a breezy spot. Sun can help drying and some people rely on it, but strong sun can fade fabric.
- Remove removable cushions and stand them on edge to dry on both sides.
- Indoors, use fans and a dehumidifier. Keep the room well ventilated.
- Do not put the furniture back until it is completely dry, including the padding. This can take a day or more.
Mold stains and musty odors
Mold can leave stains behind even after it is dead. Mild soap and blotting may lighten them, but results vary, and some stains will stay. For odors, use baking soda: sprinkle it on dry fabric, leave it for several hours and vacuum it up with a HEPA vacuum. If the smell remains after the furniture is dry, there may still be mold deep inside. Mold can also grow on clothes, and washing them is a separate process from cleaning furniture. Car seats and carpets can get moldy too; see how to clean mold out of a car.
When to throw it out or call a professional
Consider discarding upholstered furniture if the padding or stuffing has been moldy, the furniture was wet for days, it smells strongly even after cleaning, or the mold keeps coming back. Foam and stuffing are very hard to disinfect. Professional restoration companies may be able to treat valuable pieces. For very old pieces, see cleaning antique upholstery.
Preventing mold
- Clean up spills quickly and dry thoroughly.
- Keep indoor humidity moderate, and use a dehumidifier or ventilation in damp rooms.
- Leave a gap between furniture and walls for airflow.
- Fix leaks promptly.
- Do not store furniture in damp spaces, and cover it with breathable fabric rather than plastic.
- Vacuum and air out cushions regularly.
FAQ
Does rubbing alcohol remove mold?
It may help clean surface mold on some fabrics, but results vary, it can affect color, and it is flammable. Test first and use it with caution. It is not a substitute for proper drying and moisture control.
Can you get mold stains out of clothes?
Often, yes, by washing according to the care label, but some stains remain. Furniture covers are different, so follow their care tag.
Does Dawn and vinegar kill mold?
It can help clean and lighten surface mold, but there is no guarantee that it kills all mold, particularly inside padding.
What causes mold to grow on fabric?
Moisture, humidity, poor airflow and organic residue on the fabric.