How to Grout a Kitchen Backsplash


Grout is the cement substance that sits between floor or wall tiles, spanning the spaces and helping form a flat surface. A tiled kitchen backsplash is similar to a tiled wall, and is grouted in the same manner. Grouting is the last part of the tiling project, after you’ve hung the tiles and let them set. Choose the color of grout carefully so it either matches or complements your tile without standing out too much.

Things You'll Need

  • Powdered grout mix
  • Bucket
  • Wide putty knife
  • Grout float
  • Sponge
  • Caulk
  • Tile the backsplash, leaving the proper spacing between the tiles and at the joint where the tiles meet the countertop. Let the tiles fully set. Pull out the tile spacers.

  • Put 1 inch of water in the bottom of a bucket. Add enough grout powder to cover it.

  • Mix the grout with a wide putty knife. Add more grout powder and water as needed to get it to the consistency of thick mud. Make enough to cover the backsplash.

  • Let the grout sit in the bucket for 10 minutes so the compounds can meld. Stir it again with your putty knife.

  • Scoop up the grout with a grout float and press it to the backsplash. Scrape the long edge of the float diagonally over the tiles, so it forces the grout into the spaces while scraping it off the surface. Grout all the lines of the backsplash except the joint between the bottom row of tiles and the countertop.

  • Let the grout sit in the lines for about 10 minutes. Use a damp sponge to wipe up the excess grout from the surface, while leaving it in the lines.

  • Let the grout set for at least 48 hours. Caulk the joint between the bottom row of tiles and the countertop.

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