How to Clean Dirty Grout: The Ultimate Guide

Grout plays a significant role in maintaining the look and integrity of your tiled surfaces. Over time, however, grout can become stained and dirty, making your floors or walls look less appealing. Here’s a comprehensive guide to restoring your grout to its original condition.

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1/26/20252 min read

a tile floor with a blue and white tile with a blue and white background and
a tile floor with a blue and white tile with a blue and white background and

Why Does Grout Get Dirty?

Grout is porous, which means it absorbs dirt, spills, and grime. Over time, this can lead to discoloration and stubborn stains. Common causes of dirty grout include:

  • Foot traffic in tiled areas

  • Mold and mildew in damp spaces like bathrooms

  • Spills in kitchens

  • Use of improper cleaning products

What You’ll Need

Before you start cleaning your grout, gather the following materials:

  • Baking soda

  • Vinegar (for unsealed grout) or water (for sealed grout)

  • Hydrogen peroxide (optional for stubborn stains)

  • Dish soap

  • A toothbrush or grout brush

  • Spray bottle

  • Microfiber cloths

Step-by-Step Instructions

Step 1: Prepare the Area

  • Sweep or vacuum the tiled surface to remove loose dirt and debris.

  • Wipe down the tiles with a damp cloth to prepare for cleaning.

Step 2: Create a Cleaning Solution

  • Mix baking soda and water to form a paste. This will act as your cleaning agent.

  • For unsealed grout, you can use baking soda and vinegar for a deeper clean. Avoid vinegar on natural stone tiles as it may cause damage.

Step 3: Apply the Solution

  • Use a toothbrush or grout brush to apply the paste directly onto the grout lines.

  • Allow the paste to sit for 5-10 minutes to loosen dirt and grime.

Step 4: Scrub the Grout

  • Gently scrub the grout lines using circular motions to lift stains and dirt. Focus on problem areas.

Step 5: Rinse and Wipe

  • Wipe away the paste using a damp microfiber cloth.

  • Rinse the surface with warm water to remove any residue.

Step 6: Tackle Stubborn Stains

  • For particularly dirty grout, mix hydrogen peroxide and baking soda to create a stronger cleaning solution.

  • Repeat the scrubbing process and rinse thoroughly.

Step 7: Dry the Area

  • Use a clean, dry microfiber cloth to wipe the surface and grout lines. Ensure the area is completely dry to prevent mold or mildew growth.

Pro Tips for Maintaining Clean Grout

  1. Seal Your Grout: Apply a grout sealer every 6-12 months to protect it from stains and moisture.

  2. Clean Regularly: Sweep and mop tiled surfaces weekly to prevent dirt buildup.

  3. Address Spills Quickly: Wipe up spills immediately to avoid stains.

  4. Use Proper Cleaners: Avoid harsh chemicals that can damage grout and tiles.

  5. Ventilate Bathrooms: Use exhaust fans or open windows to reduce moisture buildup.

When to Call a Professional

If your grout is severely stained or damaged, it might be time to hire a professional for deep cleaning or re-grouting services.

Contact Us

Struggling with dirty grout? Call or message us today for expert help! We offer professional cleaning and maintenance services to keep your tiled surfaces looking brand new.

ProHands Handyman
📞 818-401-7766
We’re here to make your home shine!