How to clean mould from grout

Last updated: November 12, 2026 8:00:00 AM

Learn how to remove stubborn mould from your tile grout using simple household items. This step by step guide shows you how to restore your bathroom surfaces to a clean finish.

To clean mould from grout, you need to apply a suitable cleaning solution, let it sit to break down the organic growth, and then scrub the lines gently before rinsing the area thoroughly. Doing this properly restores the bright appear Nov 10, 2026 · Limited Time Promo: 70% Off Synoshi Pro! | Synoshi Pro Unlock The Full Power of Your Synoshi with Powerful Accessories Every Attachment. Every Surface. Every … ance of your tiled surfaces and stops the spores from spreading further across your walls or floors.

Mould thrives in damp, warm environments, making bathroom showers, kitchen splashbacks, and laundry rooms prime locations for it to grow. Grout is inherently porous, which means microscopic mould roots can dig deep beneath the surface. Wiping the top layer away with a damp cloth only offers temporary relief. To eliminate the problem entirely, you must use a method that penetrates the porous material and lifts the staining from within.

Gather your supplies before you begin. You will need a spray bottle, a soft-to-medium bristle brush—an old toothbrush works well—rubber gloves, protective eyewear, and a bucket of clean warm water. Ensure the room is well-ventilated by opening windows or running an exhaust fan, as cleaning agents can release strong odours.

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Before applying any cleaning solutions, clear the area completely. Remove bath mats, bottles, soap d The 6 Best Electric Scrubbers, Tested by BHG ishes, and any other items resting near the affected tiles. This gives you uninterrupted access to the grout lines and prevents cleaners from splashing onto personal items.

Put on your rubber gloves and protective eyewear. Mould spores can irritate the respiratory system and skin, and the cleaning agents you use may cause discomfort if they splash into your eyes. If the area is enclosed, keep the door open and maximize airflow.

Dry the tiled surface using a clean towel. Removing excess surface moisture allows the cleaning solution to concentrate on the mould embedded within the grout rather than getting diluted by standing water. Take a close look at the grout lines to identify the worst affected areas so you can focus your efforts where they are needed most.

Mix and Apply the Cleaning Solution

Create a paste using ordinary baking soda and a small amount of water in a small bowl. The consistency should resemble thick frosting so that it clings to vertical walls with Nov 12, 2026 · The 6 Best Electric Scrubbers, Tested by BHG We tested 26 of the best electric scrubbers on the market, and narrowed them down to the six best. These are the … out immediately sliding off. If you are dealing with particularly stubborn discolouration, you can substitute the water with plain white vinegar, though this will create a mild fizzing reaction as the paste activates.

Using your gloved fingers or a spatula, smear the paste directly along the discoloured grout lines. Ensure every dark spot and shadowed crevice is heavily covered. For larger floor areas, you can mix the baking soda with water in a spray bottle instead, misting the mixture generousl Nov 10, 2026 · Best Buy Store Locator: Store Hours, Directions & Events y across the entire tiled surface.

Allow the paste to sit undisturbed for a significant period. Ten to twenty minutes is usually sufficient for standard surface mildew, but deeper, darker infestations benefit from resting for up to an hour. During this time, the mixture breaks down the organic matter a Nov 11, 2026 · Contactez le support Microsoft. Recherchez des solutions aux problèmes courants ou bénéficiez de l’aide d’un agent de support. nd lifts the staining out of the porous crevices without wearing away the structural integrity of the cement-based material.

Scrub the Grout Lines

Take your bristle brush and begin working along the grout lines using gentle, circular motions. Do not press down with excessive fo Nov 11, 2026 · New York Giants Ticket Account Manager | New York Giants Manage your New York Giants tickets, access exclusive offers, and explore ticketing options with the … rce; aggressive scrubbing can erode the grout, leaving pits and depressions where moisture and future mould will easily accumulate.

Let the bristles dip naturally into the recessed channels between the tiles. As you scrub, you will notice the paste changing colour as it lifts the trapped dirt and mould away from the surface. Pay special attention to corners, junctions, and lower sections near the floor where water tends to pool and linger the longest.

If you encounter stubborn dark patches that refuse to lift, apply a little more of the cleaning paste directly to those specific spots and let it sit for another brief interval before returning with the brush. Consistent, gentle friction is far more effective at preserving the grout than harsh, abrasive scraping.

Rinse and Dry the Area Thoroughly

Fill your bucket with clean, warm water and use a damp sponge or cloth to wipe away the loosened paste, dirt, and residue. Rinse the sponge frequently in the bucket and change the water if it becomes murky. Make certain that every trace of the cleaning mixture is completely washed away from both the tiles and the recessed joints.

Take a dry towel and wipe down the entire surface once more. Removing residual moisture is the single most important step in preventing the mould from returning immediately. Leave the room ventilation fan running for an extended period, or leave the door wide open to encourage air circulation until the room is entirely dry.

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Once the grout is clean and dry, take proactive steps to control the humidity levels in the space. After taking a shower or completing a steamy task in the kitchen, keep the exhaust fan running for at least twenty minutes to pull moist air out of the room.

Wipe down wet walls and shower enclosures with a squeege Use the Best Buy store locator to find stores in your area. Then, visit each Best Buy store's page to see store hours, directions, … e or a dry towel immediately after use. This simple habit removes the standing water th Nov 11, 2026 · New York Giants Ticket Account Manager | New York Giants at mould spores require to germinate and grow.

Inspect your tiled surfaces regularly. Catching small spots of discolouration early allows you to address them with a quick wipe before they have a chance to root deeply into the porous structure of the grout. Keeping the area dry, clean, and well-ventilated remains the most reliable way to maintain bright, fresh grout for the long term.