how to clean mould from fabric

how to clean mould from fabric

Understanding the Enemy: What Causes Mould on Fabric?

Mould on fabric is a common issue that arises under specific conditions, making it crucial to understand these factors to prevent and treat mould effectively.

Environmental Conditions

Mould thrives in environments that are damp, warm, and poorly ventilated. Here are the key conditions that facilitate mould growth:

  • Humidity: Mould growth is highly dependent on moisture. Relative humidity (RH) between 65 and 100% creates an ideal environment for mould to develop. Keeping the RH below 60% can significantly reduce the likelihood of mould growth.
  • Temperature: Warm temperatures also contribute to mould growth. Ensuring good air circulation and maintaining a cooler environment can help mitigate this risk.
  • Ventilation: Poor air circulation is a significant factor in mould growth. Areas with inadequate ventilation, such as bathrooms, kitchens, and storage rooms, are more prone to mould.

Fabric Types

Different types of fabrics have varying levels of susceptibility to mould:

  • Natural Fibers: Fabrics made from natural fibers like cotton, linen, rayon, sea grass, and sisal are particularly vulnerable to mould. These fibers provide the organic materials that mould needs to grow.
  • Animal Fibers: While less susceptible, animal fibers like wool and silk can still be affected by mould, especially if they are not properly cleaned and maintained.
  • Synthetic Fibers: Synthetic fibers such as acrylic, polyester, and nylon are generally more resistant to mould, but they are not immune. Soiled synthetic fibers can still support mould growth.

Other Contributing Factors

In addition to environmental conditions and fabric types, other factors can contribute to mould growth:

  • Residual Dirt and Body Oils: Clothes with residual dirt and body oils can provide additional nutrients for mould to grow.
  • Storage Conditions: Clothes left wet for too long or stored in damp, poorly ventilated areas are at high risk of developing mould. This includes outdoor furniture left uncovered during rainy or humid days.
  • Underlying Damp Issues: Mould can also be a sign of an underlying damp problem in the environment where the fabric is kept. This could be due to leaky pipes, condensation, or poor insulation.

Prevention Tips to Avoid Future Mould Growth

Preventing mould is always more effective than treating it after it has occurred. Here are some comprehensive tips to keep your fabrics mould-free:

Drying and Storage

  • Ensure fabrics are completely dry before storing them. This includes drying clothes in sunlight or using a dryer if outdoor drying is not possible.
  • Store clothes in well-ventilated areas to avoid excess humidity. Regular home inspections can help identify and rectify any ventilation issues.

Regular Maintenance

  • Regularly wash and sun-dry fabrics that are prone to mould. This is especially important for fabrics used in outdoor settings or in areas with high humidity.

Environmental Control

  • Use dehumidifiers to maintain a relative humidity below 70% in indoor spaces, especially in areas prone to dampness like bathrooms and kitchens.
  • Ensure good air circulation by using fans and maintaining open windows when possible.

Cleaning and Inspection

  • Conduct routine inspections of your fabrics and storage areas to catch any signs of mould early. This includes checking for musty smells and visible mould stains.
  • Clean fabrics regularly, especially if they are soiled. Damp dusting and vacuuming can help prevent mould by removing dust and other organic materials that mould feeds on.

By understanding and addressing these factors, you can significantly reduce the risk of mould growth on your fabrics and maintain their quality and longevity.

FAQs for Cleaning Mould from Fabric


Q: What is the first step to take when I discover mould on fabric?

A: The first step is to take the affected fabric outdoors to prevent mould spores from spreading indoors. Brush off as much of the surface mould as possible using a soft-bristled brush.

Q: Can I use household products to remove mould from fabric?

A: Yes, common household products like white vinegar, baking soda, or hydrogen peroxide can be effective in removing mould from fabric. Test these on a small, inconspicuous area first.

Q: How do I use white vinegar to clean mould from fabric?

A: To use white vinegar, create a solution of equal parts water and vinegar. Spray or dab the solution onto the affected area and let it sit for an hour. Then wash the fabric in hot water.

Q: Is it safe to use bleach on mouldy fabric?

A: Bleach can be used on white, color-fast fabrics to remove mould. Dilute one cup of bleach in a gallon of water, apply it to the affected area, and let it soaking briefly before washing as usual. Avoid using bleach on colored fabrics to prevent discoloration.

Q: Can mould stains be removed by washing alone?

A: Washing alone may not fully remove mould stains, especially if they are severe. Pre-treating with mould-ridding solutions like vinegar or baking soda before washing usually yields better results.

Q: What if the fabric is delicate; can I still clean it?

A: For delicate fabrics, consider using gentle cleaning agents like mild detergent or a baking soda paste. It’s also a good idea to consult the care label and test on a small area first.

Q: Are there any preventive measures to stop mould from regrowing on fabric?

A: To prevent mould regrowth, ensure that fabrics are thoroughly dried before storing them. Store fabrics in a cool, dry place with good air circulation. Using moisture absorbers in storage areas can also be helpful.

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