How to Mix Non-Sanded Grout

Non-sanded grout works for thin tile joints.
Non-sanded grout works for thin tile joints. (Image: Jupiterimages/ Images)

Non-sanded grout is gentle enough for use on tiles that would easily get scratched, and it works well for tile with joints smaller than 1/8 inch. Mixing grout is much like making a pancake batter, notes construction professional Tim Carter; the consistency of the batter lets you know how much the material will spread. Apply grout 24 hours after you've sealed your tile and expect to give floor tiles 24 to 48 hours to dry once you're through.

Things You'll Need

  • Non-sanded grout powder
  • 5-gallon bucket
  • Putty knife

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Read over the instructions on your non-sanded grout before you begin, to learn the manufacturer's suggested water-to-grout ratio and the grout drying time.

Pour your grout powder into a 5-gallon bucket. Don't use all of your powder; if you add too much water to the grout, you need to be able to fix it by adding grout powder.

Pour water into the grout powder, stirring with a putty knife. Stir until the mixture looks smooth yet thick, like peanut butter.

Pick up a bit of grout with your putty knife. The grout should be thick enough that it remains on the knife without slipping off. If the grout moves off the putty knife, or is pourable, it's too thin. To fix this problem, add more powdered grout and mix it with your putty knife. Keep adding grout powder to loose grout until it reaches the right thickness.


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