How to Clean Mold and Mildew From Grout

How to Clean Mold and Mildew From Grout

Mold and mildew stains commonly develop on grout because grout can retain moisture longer than smooth tile surfaces. This is especially common in showers, bathrooms and other areas regularly exposed to water and humidity.

Cleaning the staining and helping the grout dry thoroughly can improve its appearance and reduce recurring mold and mildew problems.

Why Does Mold and Mildew Develop on Grout?

Grout lines can be particularly vulnerable because they may be more porous than the surrounding tile.

Moisture can collect in grout from:

• Showers and baths

• High bathroom humidity

• Condensation

• Plumbing leaks

• Standing water

• Poor ventilation

Soap residue, body oils and other material can also accumulate on grout, making regular cleaning important.

Step 1: Ventilate the Area

Before cleaning bathroom or shower grout, improve ventilation.

Run the bathroom exhaust fan and open a door or window when practical. Good airflow helps reduce humidity and allows the grout to dry more quickly after cleaning.

Step 2: Apply Mold & Mildew Cleaner

Natural Armor All-Natural Mold & Mildew Cleaner is a ready-to-use, bleach-free formula designed to help remove mold and mildew stains from compatible surfaces, including grout.

Apply the cleaner directly to the affected grout according to the product directions.

There's no need to dilute or mix the formula before normal use.

Step 3: Allow the Cleaner to Work

Give the cleaner the recommended contact time.

Grout lines may contain staining in small pores and surface irregularities, so allowing the product sufficient time to work before wiping or scrubbing is important.

Always follow the product-label directions.

Step 4: Gently Scrub the Grout

After the recommended contact time, gently scrub the affected grout with an appropriate cleaning brush.

Work along the grout lines to help loosen staining and residue.

Avoid excessively aggressive scrubbing, particularly if the grout is older, cracked or deteriorating.

Step 5: Wipe and Dry the Surface

Complete the cleaning process according to the product directions and allow the grout to dry thoroughly.

Drying is especially important because persistent moisture can contribute to the return of mold and mildew.

Can You Clean Moldy Grout Without Bleach?

Yes. Bleach isn't the only option for cleaning mold and mildew stains from grout.

Natural Armor Mold & Mildew Cleaner contains no bleach and provides an alternative for homeowners who prefer a bleach-free cleaner.

Its all-natural formula is ready to use and features a lemon scent rather than the strong chlorine odor associated with bleach-based products.

What About Stubborn Grout Stains?

Grout can hold staining more deeply than smooth, nonporous surfaces.

Older or stubborn stains may require additional cleaning according to the product directions.

If the grout itself is cracked, deteriorated or permanently discolored, cleaning may not completely restore its original appearance. Repairing or replacing damaged grout may eventually be necessary.

How to Help Prevent Mold and Mildew on Grout

Once the grout is clean, controlling moisture can help reduce future problems.

• Run the bathroom exhaust fan during and after showers

• Use a squeegee to remove excess water

• Allow shower doors or curtains to remain open when appropriate

• Repair leaking faucets or plumbing

• Remove standing water

• Keep grout and surrounding surfaces clean

• Improve bathroom ventilation

The goal is to help grout dry as thoroughly and quickly as possible between uses.

When Is Moldy Grout a Bigger Problem?

Surface staining on bathroom grout is generally a cleaning issue, but extensive or recurring mold can sometimes indicate moisture behind the tile or another underlying problem.

If mold repeatedly returns despite proper cleaning and moisture control, or if tiles or grout remain persistently wet, further inspection may be appropriate.