Black mould on bathroom silicone sealant isn’t just ugly—it’s a health hazard. Breathing in mould spores can trigger allergies, asthma, and other respiratory issues. Scrubbing it away risks damaging the sealant, leading to costly repairs. But there’s a simpler, gentler way to kill mould and keep your bathroom safe—no elbow grease required.
Why This Method Works
Mould thrives in damp, poorly ventilated spaces like bathrooms. Traditional scrubbing can push spores into the air or tear the silicone, creating gaps where more mould can grow. Instead, using natural acidic or antibacterial solutions breaks down mould at the root without physical effort. These solutions penetrate the porous silicone, killing the mould and preventing it from coming back quickly.
Benefits of This Natural Remedy
This method is non-toxic, safe for households with kids or pets, and cost-effective (most ingredients are already in your kitchen). It preserves the silicone sealant’s integrity, avoids harsh chemicals, and reduces the risk of mould regrowth. Plus, it takes less than 30 minutes of active work!
Ingredients and Their Benefits
| Ingredient | Benefit |
|---|---|
| White vinegar | Kills 82% of mould species with acidity |
| Baking soda | Neutralizes odours and lifts stains |
| Hydrogen peroxide (3%) | Disinfects and whitens silicone |
| Tea tree oil (optional) | Natural antifungal for long-term prevention |
Step-by-Step Instructions
- Mix the solution: Combine equal parts white vinegar and water in a spray bottle. For stubborn mould, add 1 tablespoon of baking soda per cup of liquid.
- Spray generously: Soak the mouldy sealant with the solution. Let it sit for 20–30 minutes to penetrate.
- Wipe away mould: Use a microfiber cloth or soft sponge to gently wipe the area. No scrubbing needed—the mould will slide off easily.
- Disinfect (optional): Spray 3% hydrogen peroxide on the sealant, wait 10 minutes, then rinse with water.
- Prevent regrowth: Add 5–10 drops of tea tree oil to 1 cup of water, spray on dry sealant weekly.
Remember
Always test solutions on a small area first to ensure they don’t discolor silicone. Avoid mixing vinegar with hydrogen peroxide—they create irritating fumes when combined. Improve bathroom ventilation by using exhaust fans or opening windows after showers. If mould covers large areas or you have health concerns, consult a professional cleaner or doctor.
