To make your old grout look brand new, start by deep cleaning it with a hydrogen peroxide and baking soda paste. If stains remain, apply a grout colorant (like a grout paint) to refresh the color. For heavily cracked or deteriorating grout, your best option is to scrape it out and replace it.
To make old grout look new again, start by deep cleaning with a mixture of baking soda and 3% hydrogen peroxide. For stubborn, permanent stains, apply a colorant like a Grout Paint Pen or Grout Refresh Sealer, which permanently dyes the lines to your choice of a fresh color.
Steps:
To make dirty or discolored grout look brand new, choose between deep cleaning, recoloring, or applying a fresh topcoat.
To fix discolored grout, start by deep cleaning the lines with a baking soda and hydrogen peroxide paste or a commercial grout cleaner. Scrub with a stiff-bristle brush, rinse, and let dry. If stains remain, apply a Grout Colorant to refresh the shade, and finish by applying a Grout Sealer to prevent future discoloration.
Yes, Dawn dish soap is excellent for cleaning grout because its gentle, grease-cutting formula will not strip sealers or discolor tile. For everyday maintenance, simply mix a dime-sized squirt of Blue Dawn in a 32-oz spray bottle of warm water. For tougher grime, you can upgrade to a deeper-cleaning DIY mixture.
Once you've cleaned your grout and chosen the right stain, you simply paint the dry grout with the stain and paintbrush, allow it to dry, and clean off the excess.
Vinegar is acidic and can etch certain natural stone, such as marble, travertine and limestone. The occasional use of vinegar on porcelain or ceramic tile with cement-based grout should not cause damage. However, frequent or regular use can discolor and weaken grout and should not be used for routine maintenance.
Grout pens: a quick and easy way to restore discoloured grout lines without scrubbing. Grout pens work well for light stains and help keep grout looking bright. Regrouting: if your grout between tiles is severely discoloured, cracked, or crumbling, replacing it can give your tiles a fresh, clean look.
Yes, you can use a Magic Eraser on grout. It acts like micro-sandpaper, making it highly effective at lifting stubborn dirt, grime, and mildew. However, because it is abrasive, you should scrub gently to avoid etching the grout or scratching surrounding tile.
Just a few more important points: As the grout can absorb the soap as well as a stain, do not clean with oil or wax based cleaners (Murphy's Oil soap, Pine Sol, etc.). These products will leave a waxy or oily film in the grout. Even good alkaline cleaners, if not properly rinsed, will leave a sticky soap film.
Vinegar & Baking Soda
OxiClean is a highly effective, fume-free oxygen bleach for lifting grime and stains out of tile grout. Mix 2 cups of OxiClean powder per gallon of hot water (or make a thick paste with water for tough spots). Apply it, let it sit for 15–30 minutes, scrub, and rinse thoroughly.
Professionals use heavy-duty, commercial-grade acidic and alkaline cleaners, often paired with high-pressure rotary hot-water extraction machines. For stubborn stains, they frequently rely on professional-strength stain removers, or a simple DIY mix of baking soda and hydrogen peroxide.
The short answer is no; you cannot simply smear new grout directly over old grout. Because grout is a porous mixture that needs a certain depth to bond, new grout will not stick to the old surface and will crack, flake, and fall out within a few weeks.
No, baking soda and hydrogen peroxide will not damage your grout. In fact, they are highly recommended by cleaning professionals as a safe, non-toxic, and effective alternative to harsh commercial chemicals.
Use Baking Soda And Vinegar
Yes, Dawn dish soap is excellent for cleaning grout because its gentle, grease-cutting formula will not strip sealers or discolor tile. For everyday maintenance, simply mix a dime-sized squirt of Blue Dawn in a 32-oz spray bottle of warm water. For tougher grime, you can upgrade to a deeper-cleaning DIY mixture.
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.
The best homemade tile grout cleaner combines 12one-half𝟏𝟐 cup baking soda, 14one-fourth𝟏𝟒 cup hydrogen peroxide, and 1 tablespoon of liquid dish soap. This safe, non-toxic paste lifts dirt and brightens dingy lines without weakening the cementitious material.
Leave a 50/50 mixture of distilled white vinegar and water on grout for 5 to 10 minutes. Do not exceed 15–20 minutes.
Restoring grout depends on its condition. For dingy or stained grout, a deep clean usually does the trick. If the color is permanently faded, you can use a grout stain/colorant. For cracked, crumbling, or missing grout, you will need to scrape out the old material and apply new grout.
Yes, you can add color to grout with concrete pigment. The pigment powder is mixed with grout to change its color to any custom color grout. Depending on the type of grout you're using for the project, the final color may vary from our color chart – white or gray, sand or non-sanded.
To restore grout to its original color, first deep clean it using a baking soda and hydrogen peroxide paste. If stubborn stains remain, use a commercial grout cleaner. For permanently stained or faded grout, apply a grout colorant or paint pen to completely refresh the shade.