Does a grout pen actually make grout white again?

Author: Isidro Nader  |  Last update: Thursday, November 13, 2025

Grout pens will only temporarily cover your grout's discoloration.

Do grout whitening pens work?

Can a grout pen really change the look of your tiles? Yes, a grout pen can change the look of your tiles. However, the flow of the paint isn't always steady, which can result in some areas looking brighter than others. Yes, grout pens can add contrast and detail to your tiles.

Does grout paint actually work?

It offers limited stain resistance. Many people will choose the paint option when the grout is not structurally intact. Painting over crumbling grout will only mask the problem and your grout will continue to worsen, making your DIY paint job a waste of time and money.

Will grout marker work on dirty grout?

The grout must be fully cleaned before you can use the pen or else it will not apply and adhere correctly. You may need to allow the first coat to dry before applying a second one. Choose a grout pen with a comfortable grip that makes it easy to hold steady while you mark your lines.

How to fix white grout that turned yellow?

Mix hydrogen peroxide and baking soda in a bowl to form a thick paste. Spread the paste onto your grout using an old toothbrush to completely coat the area to be cleaned. Let it soak in for about 5 to 10 minutes. Like the previous method, use a brush with firm bristles to scrub the grout.

Do Grout Pens Really Work - easy way to fix stained discolored grout.

What is better than a grout pen?

Grout Magic is a high quality sealer and re-colourant, offering superior performance to a grout paint or grout sealer that are often used to re-colour tired looking grouting. Grout Magic also out performs and lasts longer than the cheaper grout pens that are often used to tidy up dull and dirty grout.

Can you paint grout to make it white again?

Yes, you can! Changing grout line color is easy and relatively fast. I take you through the whole process in this quick video. You can even make repairs to your grout while you're doing this so that your floors last a lifetime.

Does anything really clean grout?

Here's a few DIY grout cleaners you can try: Make a spreadable paste with 3/4 cup baking soda with 1/4 cup hydrogen peroxide and 1 tablespoon of mild dish soap. Add more baking soda or peroxide if the mixture is too runny or thick.

How long will grout paint last?

Answer: 3 to 5 years.

What do professionals use to clean 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.

What do you do when dark grout turns 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.

Can toothpaste whiten grout?

Try using just plain old toothpaste and apply a dollop to a damp cloth. Next, pat down the grout gently and let it sit like that for a few hours. Finally, wipe away what's left of the toothpaste, and voilà, your grouts should be squeaky clean and white.

Can you use a grout pen over old grout?

It's ridiculously easy. Paint over the offending, grubby grout with the pen. That's it. The ink will cover the muck and restore the grout to its sparkling former glory.

What is best for whitening grout?

Grout whitening can be done in various ways:
  • Cleaning vinegar.
  • Bleach.
  • Baking soda.
  • Fabric softener.
  • HG grout cleaner.

Will hydrogen peroxide ruin grout?

Yes, hydrogen peroxide is a natural neutral cleaner that is safe to use on grout. Hydrogen peroxide and baking soda produce oxygenated bleach, which is highly effective for cleaning grout.

Does OxiClean clean grout?

If you're trying to clean grimy grout between your bathroom shower or floor tiles, then OxiClean™ bathroom cleaners are here to help! They get rid of grout stains on vertical and floor tiles for a refreshed bathroom.

Are grout pens any good?

Grout pens will only temporarily cover your grout's discoloration. That's probably why they are the cheapest option available. We run into the infamous grout pen issue nearly every other week. The project usually goes awry when the homeowner applies the grout pen to the grout and some bleeds over onto the tile.

Can I put white grout over grey grout?

Can You Change the Color of Grout? Yes. Since tiling isn't structurally dependent on the grout, you can change the color without tearing up the tile and starting over.

How to keep grout white in shower?

Grout Sealing: Apply a grout sealer annually to protect white grout from stains and discoloration. Ensure the grout lines are clean and dry before applying the sealer. Avoid harsh cleaners: Steer clear of abrasive cleaners and bleach-based products, as they can damage grout over time and cause discoloration.

What grout do professionals use?

Jim Whitfield, manager of Technical Services at Mapei told industry professionals, “Because epoxy grout is so tough, it wears extremely well. It doesn't wear down over time and become a tile gutter—like cement grout can—where all the dirt and liquid and junk collects.”

What can I use instead of a grout pen?

A sealer is especially beneficial for grout that is frequently exposed to moisture, for example in bathrooms where steam is often present. By sealing the grout, you will be less likely to experience discoloration or mold growth due to moisture infiltration.

Does grout dye really work?

Color sealing your grout may be a recent innovation, but it is certainly not just a fad. Quality color sealers repel oil and water-based liquids, which will prevent food and beverage stains. In addition, they contain constant acting mildewcides and other agents that inhibit the growth of bacteria and mildew.

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