Grout cleaning and repair before you can seal your grout you ll need to clean the tile around the grout and then clean the grout itself.
How to clean and seal tile floor grout.
No need for extra rinsi.
However if you notice mold or mildew on your grout you will need to deal with that first.
Here s how to clean and seal it.
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Otherwise you ll seal in dirt and damaged.
Before applying a sealer be sure to clean your grout thoroughly and repair any cracks or crumbles in the grout lines.
This can be done with a bleach solution composed of three fourths of a cup of bleach added to two gallons of water.