How to fix grout that was sealed WHEN DIRTY? looks awful!

Cel
by Cel
the previous owners of our home apparently sealed over dirty grout. i have spent hours with bleach and oxi clean and grout cleaners and scrub brushes. nothing works. any thoughts (besides the obvious re-tile the floor)? this is a very high traffic area. thank you!
  10 answers
  • Ron Ron on Oct 08, 2017

    Aply elbow grease with a carbide grout tool you can purchase at the local home center. Select a small area and slide the cutting edge across all the joints to sctatch the grout surface and see if it doesn’t make the differance. There are products that will clean/rejuvenate grout however, some sealers may block their effectiveness. Good luck and eat your Wheaties. Lol.

  • Nancy Nancy on Oct 08, 2017

    Home Depot sells a product called POLYBLEND GROUT RENEW. It is an all-in-one colorant and sealer. It is stain and fade resistant. I used it on grout that was inconsistent with other grout in various areas of my bathroom and kitchen. It works well, but you do need to work quickly with it!

  • 2br30776151 2br30776151 on Oct 08, 2017

    My tiles were sealed for 2yrs. I cleaned them with a mixture of Baking Soda and white vinegar, scrub into grout lines leave on for about 10mins. wipe off.... the results were amazing..It really worked...

  • Kitty Watson Kitty Watson on Oct 09, 2017

    Home Depot has grout pens in many colors, including white & tan. I did my white kitchen tiles about 2 years ago & it still looks great. It's so easy.


  • Renee Vlna Renee Vlna on Oct 09, 2017

    I covered the tub with plastic and used limeaway and a groutting brush. took very little time and came out pure white. Make sure to reseal.

  • Fauxgal Fauxgal on Oct 09, 2017

    Just buy the marker-type white, grout re-sealer. You might need a couple, but they work great!

  • Pam Walker Pam Walker on Oct 09, 2017

    GET a white out pen (used for correcting typing errors on paper) & run over the entire area between the tiles with it. Let it dry. Reseal & dry completely OR white paint & a tiny paint brush (or piping bag) & paint in between the tiles & reseal OR regrout & seal.


  • Sil11542879 Sil11542879 on Oct 09, 2017

    I rented an apartment the tile in bathroom was really gross i used white shoe polish used on baby shoes when it dries just buff off tiles and looks great will have to repeat over time but worked

  • Kathy Davidson Kathy Davidson on Oct 09, 2017

    Not everyone has white grout. Mine is a very light offwhite. What do I use?

    • See 1 previous
    • Fauxgal Fauxgal on Oct 10, 2017

      You can buy that color in a grout pen too. Check Home Depot, Lowes, and even Walmart, and paint stores. But, let's say you couldn't find the color. You could always buy a regular paint marker pen (or two ) from an art department, and use those. BUT IF you do that, you will have to buy a sealer and put that over the top of the grout once everything has dried for 2 days (and remember to let it dry a day in between coats too).

  • Linda Linda on Feb 25, 2020

    I am not sure if this will work but Make a paste of baking soda and peroxide then apply it to your grout with a toothbrush. Let it sit a little and then remove with a clean cloth.