How do you clean blue grout?

Author: Guillermo Kulas  |  Last update: Thursday, January 1, 2026

Need a recipe? Mix together 1/2 cup of baking soda, 1/4 cup of hydrogen peroxide, and 1 tsp dish soap. Apply cleaning mixture onto the grout, wait 5-10 minutes, then scrub and rinse. All done!

How do you clean colored grout without damaging it?

There are a variety of solutions to clean your tile such as baking soda or vinegar with water, OxiClean, or many other spray cleaners designed to be safe for your grout. If the grout lines are a light color, bleach or hydrogen peroxide solutions can be a good product to clean and sanitize the tile grout.

Will vinegar damage colored grout?

DO NOT USE VINEGAR. Vinegar is acidic and will seep into the pores of the grout and destory it slowly over time.

What causes grout to turn blue?

Although acidic pH water is the most common cause of blue / green tiles, the opposite effect, or too much alkalinity, can also have damaging effects, such as clogged pipes and fixtures, or slow running faucets.

Will hydrogen peroxide damage colored grout?

Hydrogen peroxide won't damage normal tiles or colored grout. However, you shouldn't use it on polished marble. Cleaning with hydrogen peroxide and baking soda is a great way to remove stubborn stains from your grout.

Amazing Method! Even 50 Year Old Tiler Never Seen Such Method

What do professionals clean grout with?

Professionals often use steam to loosen the dirt and other particles trapped in the grout without needing to scrub manually. While every steam cleaning machine is different, you'll follow this basic process to clean grout lines: Use a steam cleaner with a small nylon brush attachment.

Will bleach ruin colored grout?

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

What is the best way to clean Discoloured grout?

Hydrogen peroxide has so many uses, and it's especially good at brightening discoloured grout. Unlike vinegar, which can corrode the grout over time, hydrogen peroxide is a gentle disinfectant that is non-toxic – when used correctly. To clean grout, simply pour undiluted hydrogen peroxide into a spray bottle.

How to clean blue stains in shower?

White vinegar is an effective cleaning solution, especially when combined with an abrasive material like table salt. For stubborn stains, sprinkling baking soda or borax onto the vinegar mixture will help. Lemon juice is another ingredient that dissolves blue-green stains and will also leave a fresh scent behind.

How do you fix wrong color grout?

Replacing grout is certainly one way to fix the problem. Instead, use UltraCare Grout Refresh, a water-based color seal, available in 40 standard grout colors. It's made for refreshing the look of old, discolored grout, or completely changing the color of the existing grout.

Will baking soda damage grout?

House cleaning professional Filip Boksa says the most effective way to clean tile grout is to mix ½ cup (136 g) of baking soda, 14 c (59 mL) of hydrogen peroxide, and 1 tsp (4.9 mL) of dish soap. Pour the ingredients into a small bowl and mix with a spoon. Baking soda is alkaline, so it won't harm your grout.

Why spray vinegar in the shower?

On a molecular level, vinegar's acetic acid dissolves mineral deposits and breaks down some oils, making it effective against limescale and soap scum.

How to clean blue grout?

If you prefer cleaning grout with a DIY mixture, make a paste of 3/4-cup baking soda, 1/4-cup hydrogen peroxide and 1 tablespoon of mild dish soap. Apply the paste to the grout with a grout brush and scrub the grout.

Will Dawn dish soap clean grout?

If you're a die-hard DIYer, using Dawn dish soap alone can be a safer option for mild cleaning. Dilute a small amount of Dawn in warm water, scrub the grout with a soft brush, and rinse thoroughly. However, this method is less effective for tackling stubborn stains or deep-seated grime.

How to remove blue stains from tile?

For cleaning blue stains from shower/bathroom tiles, we suggest applying MAPEI's UltraCare Heavy-Duty Stone, Tile & Grout Cleaner mixed with equal parts water for cleaning the tiles. Apply the solution to the affected area and allow it to stand for 5-10 minutes.

How do you clean blue tarnish?

Things You Should Know
  1. Mix equal parts warm water and white vinegar. Use a toothbrush to scrub the tarnish off the metal with the mixture.
  2. Combine ½ cup of vinegar, 1 teaspoon of salt, and ¼ cup of flour for stubborn tarnish. ...
  3. Buff the metal with the cut side of a lemon to dissolve tarnish.

What causes a blue ring in the toilet bowl?

These rings are most often caused by minerals in the water supply, especially in areas with hard water. This guide explains what causes toilet bowl rings, how to remove the stains depending on the severity of the buildup, and how to prevent it from happening in the first place.

What do professionals use to clean grout?

What do professionals use to clean grout? Whether you believe it or not, most professionals use a solution of white vinegar and water with a 1:1 ratio. This solution is often more effective than dedicated Ph-neutral grout cleaners.

Does hydrogen peroxide damage grout?

In most cases, hydrogen peroxide is safe for cleaning grout, as long as it's used correctly and in moderation. However, some grout types, like colored or older grout, may be more sensitive to chemical cleaners. Always test a small, inconspicuous area first to ensure there are no adverse reactions.

How do I get my shower grout white again?

Baking powder is actually a tried-and-true way to clean bathroom grout. First, mix some baking powder with water to create a thick paste. Then apply this paste to the grout and let it sit for about an hour. The grout can then be rinsed with clean water and any reside that remains can be wiped away with a cloth.

Is OxiClean a good grout cleaner?

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.

Is vinegar bad for grout?

Vinegar can indeed ruin grout.

Once lodged in these spaces, vinegar will corrode grout with the passage of time. The grout will eventually wear off. So you should take not to apply vinegar for cleaning purposes if you have unsealed grout in the area.

What not to use on shower tile grout?

Next, ensure you're NOT scrubbing any of the tiled areas with bleach or ammonia products. Chemical cleaners, such as, Tilex, Soft Scrub, Scrubbing Bubbles, or ammonia products will nearly always result in your tile surfaces' grout becoming very discolored.

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