How to Clean Mould Off Walls: Safe & Effective Methods

How to Clean Mould Off Walls: A Step-by-Step Guide

Mould on walls is not only unsightly but can also pose serious health risks if left untreated. Whether you’ve noticed small patches or more extensive growth, it’s crucial to take immediate action to prevent further damage. In this guide, we’ll show you how to clean mould off walls effectively and safely so you can restore your living space and protect your health.
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Why Mould Forms on Walls

Mould thrives in damp and humid environments, which is why areas like bathrooms, kitchens, basements, and windowsills are often prone to growth. When moisture gets trapped in walls, it creates the perfect environment for mould spores to settle and grow. If you spot black, green, or white patches on your walls, it’s a clear indication of mould.

Why You Should Remove Mould Immediately

Mould isn’t just unsightly – it’s a health hazard. It can trigger allergies, asthma, and respiratory issues. Here’s how to tackle it safely:

Best Chemicals for Killing Mould

• White Vinegar: Natural, non-toxic, and kills 82% of mould species. Spray undiluted, leave for 1 hour, then scrub.
• Hydrogen Peroxide (3%): Effective on porous surfaces. Apply, wait 10 mins, rinse.
• Baking Soda Paste: Mix with water, scrub, then rinse. Deodorizes while cleaning.
• Commercial Mould Removers: Look for EPA-approved products (e.g., RMR-86). Follow label instructions.

Chemical-Free Mould Removal Methods

• Lemon Juice: Natural acidity breaks down mould. Apply, scrub, and rinse.
• Sunlight: Move furniture to expose mould to UV rays (works for small patches).
• Steam Cleaning: High-temperature steam kills mould without chemicals.

Step-by-Step Cleaning Guide

1. Circulate Air: Open windows and use fans to prevent spore spread.
2. Isolate the Area: Cover furniture with plastic sheets.
3. Scrub Gently: Use a stiff brush or microfiber cloth. Avoid abrasive tools on paint.
4. Dry Thoroughly: Use a dehumidifier or fan to eliminate moisture.

Common Mould Hotspots

Mould thrives in damp, poorly ventilated areas. Check these spots regularly:

• Window Frames & Sills: Condensation builds here.
• Corners & Edges: Poor airflow allows moisture buildup.
• ️ Behind Furniture: Sofas, wardrobes, and beds trap humidity.
• Bathrooms & Kitchens: Steam from showers and cooking.

Prevent Mould from Returning

• Improve Ventilation: Use exhaust fans and open windows daily.
• ️ Control Humidity: Keep indoor humidity below 60% with a dehumidifier.
• Clean Regularly: Wipe down walls in high-moisture areas weekly.