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Question DetailsAsked on 9/11/2013

what's the best way to clean floor tile grout?

is it necessary to seal the grout after cleaning? If so what is best?

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1 Answer


For normal cleaning there are commercial tile and grout cleaners like 401 or Hoover Floormate or Scrubbing Bubbles. For tough stains Comet Tile and Tub cleanser or a 25% mix of chlorine bleach and a toothbrush does good - just keep a thick wet towel below you so you do not bleach the tub, and wash off throughly every couple of minutes after you finish each small area. Do this only with ceramic or porcelain tile - NOT the "artistic" hand-painted tiles tht are just urethane coated (though these are not designed for floors anyway). Unless the grout is getting dirty and gray quickly, you do not have to reseal after using these.

If it is getting dirty quickly or staining easily, then a grout refurbishing and whitening agent like Zep or SC Johnson Professional Grout Cleaner or a professional acid wash treatment is needed, which actually removes a thin layer of the grout. After that you DO need to reseal it.

Of course, eventually (20+ years typically) you will start having bits falling out, that should be immediately regrouted with ready mixed grout or a grout replacement like Dap Tub and Tile Caulk, so water does not penetrate into the wall or floor.

Answered 6 years ago by LCD

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