How to keep black grout from turning white?

Author: Chanel Wintheiser  |  Last update: Sunday, July 20, 2025

After tiling, a good step is to apply a penetrating vapor-permeable sealer which can help delay the rate of efflorescence.

How to prevent black grout from turning white?

The obvious answer is to clean it. There are a variety of ways to do so using cleaning solutions, abrasion tools, etc. Once clean, I agree that you would want to seal it to keep it white. That said, if it's sanded grout I would highly recommend using a grout paint and sealer combo.

How do you keep black grout from fading?

Using a trusted, high-quality grout cleaner, you can work towards an easy deep clean for your colored grout and protect the surrounding tile in one simple step. Lastly, we always recommend sealing grout to protect against soil build-up.

How to clean black grout that has turned white on a shower?

You will need to mix equal parts white vinegar and warm water in a spray bottle. Spray it onto the affected grout joints and leave it for 5 minutes. After letting it penetrate, scrub with a brush and rinse with clean water before wiping dry.

How to remove white haze from dark grout?

How to Remove Grout Haze
  1. Use Water and a Cloth. In the best-case scenario, you will be able to dip cheesecloth or a terry cloth washcloth into some water, wring it out, and wipe the grout haze from the surface. ...
  2. Get a Rubber Grout Float Involved. ...
  3. Mix in the Vinegar. ...
  4. Pick Up a Professional Grout Haze Remover.

Why is My Black Grout and Black Tile Hazing #tilegroutcleaning #efflorescence #hazing #blackgrout

Why are my black shower tiles turning white?

Hard Water Deposits: Hard water contains high levels of minerals like calcium and magnesium. When the water evaporates, it leaves behind these minerals, resulting in white, chalky stains. Soap Scum: This is a combination of soap and mineral deposits that can build up on tiles and grout.

What is the downside of black grout?

Cons Of Going With Black Grout

Here's what you need to know before committing; while black grout is absolutely stunning when it's first installed, it can quickly become a small cleaning nightmare and challenging to maintain. Take a minute and consider where you want to use black grout before making a decision.

What grout sealer is best for showers?

To seal to perfection, we recommend using Universeal Grout and Tile Protector. This product is a solvent based sealer designed to deeply penetrate your grout. It is effective in preventing stains from oil and water-based liquids and it will not discolour your tiles.

How do you renew black grout?

Mix 7 cups of warm water, 1/2 cup baking soda, and 1/3 cup ammonia in a bucket. Use a sponge or soft cloth to apply the cleaning solution to your grout lines. Let it sit for 10–20 minutes. Take a scrub brush or old toothbrush to scrub the grout.

Why does my shower grout keep turning black?

Black grout can also be mold and mildew, which forms where there's moisture or high humidity. Mold is a type of fungus. Unsurprisingly, it's not good for your health.

How to keep black tile clean?

Use a mix of warm water and mild dish soap. Avoid acidic cleaners, they can dull the finish. For tougher grime, a paste of baking soda and water works well!

Does bleach ruin black grout?

Cleaners that contain bleach or ammonia can even fade the color of your grout, leaving you with an uneven appearance.

How to remove efflorescence from black grout?

Grout cleaner: Choose a commercial grout cleaner or make a DIY solution using equal parts white vinegar and water. Grout brush: A stiff brush will help agitate the efflorescence. Soft cloth or sponge: To wipe away residue.

Does vinegar discolor black grout?

Vinegar can indeed ruin grout.

Unfortunately, vinegar penetrates unsealed grout by seeping into the air spaces within the material.

How do you seal black grout in a shower?

How to seal tile grout in a shower step by step
  1. Apply the shower grout sealer. Shaking the can well before use, now spray approximately 25 to 40cm from the tile and grout surface. ...
  2. Let the shower tile grout sealer dry for up to 2 hours. ...
  3. Test an area using water droplets and apply second coat. ...
  4. Let dry for at least 8 hours.

What do professionals use to clean shower grout?

Some professionals swear by a simple mixture of baking soda and peroxide to clean grout. Hydrogen peroxide is an acid, and baking soda is a base compound. Mixing the two together creates a reaction that can penetrate the grout lines and free dirt and debris.

Is it better to spray or brush grout sealer?

It is generally better to use brushed grout sealer than spray sealer as you can apply more sealer with more control.

Why did my black grout turn white?

The most common reason is moisture from the ground below the slab, but grout may also turn white from the rain in outdoor installations, or in rare cases from water used to clean the floor.

What should you not use on grout?

Remember the tip on avoiding bleach, ammonia, and other harsh chemicals to clean grout. It would be best if you also avoided vigorous scrubbing. A rough brush and too much elbow grease will remove the dirt, but it could also remove the grout. Another way to prevent grout damage is to use a squeegee on shower walls.

Is black grout a good idea for a shower?

White tiles with black grout work well in a bathroom shower where you have the soft water breaking up the graphic lines. If you can't envisage what your space will look like, find pictures of white tiles with black grout in different laying patterns to see how it affects the look of the tile.

How to clean black grout in shower that turned white?

If the while condition is actually efflorescence then it should be able to be removed with a slightly acidic solution like vinegar, which should only be used as a test to verify it is efflorescence. If it is efflorescence, then purchase a tile cleaner that is made for removing efflorescence.

Will epoxy grout stop efflorescence?

Use High-Quality Epoxy Grout:

These grouts are specifically designed to minimize the risk of salt migration and efflorescence formation.

How do you remove efflorescence from grout with vinegar?

Cleaning Efflorescence

Vinegar Solution: Create a cleaning mixture with equal parts of distilled white vinegar and water. Apply this solution to the grout lines and let it sit for a few minutes to loosen the dirt and debris. Afterward, scrub the grout lines with a soft brush to lift the discolored deposits.

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