How to Clean Grout and Prevent Mould Buildup
Keep Your Grout Clean and Mould-Free
Grout is one of the most common areas in a bathroom to attract dirt, stains, and mould. Over time, moisture and soap residue can lead to discolouration and mildew, making your bathroom look less than fresh.
With proper cleaning and maintenance, you can keep your grout looking bright, clean, and mould-free—without the need for harsh chemicals like bleach.
1. Why Does Grout Get Dirty and Mouldy?
Grout is porous, meaning it absorbs moisture, dirt, and soap residue, which can lead to:
❌ Mould growth – Damp environments create the perfect breeding ground.
❌ Discolouration – Grout traps grime and turns yellow or black over time.
❌ Hard water stains – Mineral deposits can cause buildup, especially in showers.
💡 Tip: Regular cleaning and moisture control can prevent grout from getting dirty in the first place.
2. How to Clean Grout Effectively
🧼 Everyday Grout Maintenance
For light dirt and maintenance, use:
✔ A mix of warm water and mild detergent.
✔ A soft brush or sponge to gently scrub grout lines.
✔ A squeegee or towel to dry grout after showers.
💡 Tip: A quick wipe-down after each shower helps prevent buildup.
🛁 Deep Cleaning Grout (for Tough Stains & Mould)
For grout that’s already stained or has mould, use one of these effective cleaning methods:
🧽 Baking Soda & Vinegar (Natural Method)
✔ Make a paste with baking soda and water.
✔ Apply to grout and spray lightly with white vinegar.
✔ Let it sit for 5–10 minutes before scrubbing with a brush.
✔ Rinse with warm water and dry.
💡 Tip: Avoid vinegar on natural stone tiles, as it can cause damage.
🦠 Hydrogen Peroxide (For Tough Stains & Mould)
✔ Mix equal parts hydrogen peroxide and water in a spray bottle.
✔ Spray onto grout and let it sit for 10–15 minutes.
✔ Scrub with a toothbrush or grout brush, then rinse.
💡 Tip: Hydrogen peroxide is great for disinfecting and whitening grout without harsh chemicals.
🌱 Plant-Based Grout Cleaners
✔ Choose a natural, chemical-free grout cleaner with plant-based ingredients.
✔ Follow the instructions for safe and effective cleaning.
✔ Rinse thoroughly with water to remove any residue.
💡 Tip: Many eco-friendly cleaners are just as effective as traditional ones—without the harsh fumes!
3. Preventing Mould Growth in Grout
Since mould thrives in moisture, prevention is key!
✔ Run the exhaust fan for at least 10–15 minutes after showers.
✔ Leave windows or doors open to improve airflow.
✔ Wipe down grout and tiles after showers to prevent excess moisture.
✔ Use a daily shower spray (vinegar + water mix works well).
💡 Tip: If your exhaust fan isn’t strong enough, consider upgrading to a more powerful model.
4. Should You Seal Your Grout?
Sealing grout creates a protective barrier, reducing the chances of stains and mould.
✔ Sealed grout repels moisture and dirt, making cleaning easier.
✔ Reapply grout sealer every 6–12 months to maintain protection.
✔ Use a penetrating sealer for best results.
💡 Tip: If your grout gets dirty quickly, it may need resealing!
5. When to Consider Grout Replacement
If grout is crumbling, permanently stained, or full of mould, it may be time for a refresh.
✔ Regrouting can give your bathroom a fresh, new look.
✔ If grout is cracked or missing, moisture can seep in—fix it quickly to avoid water damage.
✔ Professional steam cleaning or regrouting may be needed for heavy buildup.
💡 Tip: Keeping grout clean extends its lifespan, reducing the need for early repairs.
Final Thoughts: A Cleaner, Fresher Bathroom
By following these simple cleaning and maintenance tips, you can keep your bathroom grout spotless and mould-free.
At Custom Bathroom Creations, we design bathrooms that are easy to clean and maintain—because a stunning space should also be stress-free to look after!
Need expert advice on grout care? Contact us today!