How Do You Grout Tile Backsplash

Grouting tile backsplash is an important step in achieving a beautiful, finished look for your kitchen or bathroom. Properly grouting the joints between tiles seals the surface, prevents moisture damage, and really makes the tilework pop. While it may seem intimidating as a DIY project, grouting tile backsplash is quite straightforward when you understand the basics. Here is a step-by-step guide on how to grout a tile backsplash.

Supplies Needed

Before starting, make sure you have the necessary supplies on hand:

  • Grout – Either sanded grout or unsanded grout, depending on tile spacing
  • Grout float – For spreading grout over the tiles
  • Grout sealer – To protect the finished grout
  • Sponge – For wiping up excess grout
  • Buckets – For grout and clean water
  • Grout haze remover (optional) – To remove haze

Other useful items include old rags, a utility knife, grout bag, and drop cloth.

Step 1: Prepare the Tile Surface

The first step is to ensure the tile surface is clean and that all spacers between tiles have been removed. Go over the entire surface with a damp sponge to remove any dust or debris. The tile must be clean for the grout to adhere properly. Allow the tile to dry completely before moving onto grouting.

Step 2: Mix the Grout

Mix the grout according to the manufacturer’s instructions, to a thick, peanut butter-like consistency. Only mix up as much grout as you can use within 30 minutes. If using sanded grout, be sure to stir frequently as the sand can settle. Have plenty of clean water nearby to keep your sponge moist.

Step 3: Apply the Grout

Using your float, spread the grout diagonally across the tile, pressing firmly to pack the joints full. Holding the float at a 45° angle helps. Work in small sections so the grout stays moist. Scrape off any excess grout with the edge of the float.

Step 4: Wipe the Surface Clean

Once the section is grouted, wait 10-15 minutes for it to firm up slightly. Then, use a damp sponge to wipe diagonally across the tiles to remove excess grout. Rinse the sponge frequently and wring it out well. Continue wiping until the surface is smooth and cleaned up. Avoid digging into the joints – just skim over the tile.

Step 5: Final Clean Up

Do a final clean up by going over the tiles with a lightly dampened sponge to remove any remaining haze or residue. Wipe diagonally to prevent pulling grout from the joints. Allow the grout to dry for 24 hours before continuing with sealing or other finishing steps.

Tips for Grouting Tile Backsplash

  • Work in small sections so the grout stays moist and is easier to wipe clean
  • Apply even pressure when packing the grout into joints
  • Make sure edges and corners are well-packed
  • Minimize grout lines on the wall by wiping diagonally
  • Change rinse water frequently to prevent haze
  • Avoid excess water to prevent washed out or cracked grout
  • Let the grouted area dry out 24 hours before sealing or finishing

Proper grouting is crucial to get those crisp, clean grout lines on your tile backsplash. Go slowly, pack the joints well, keep a damp sponge handy, and thoroughly clean up haze. With some care and patience, you can achieve flawless results. Let the grout cure fully before sealing or enjoying your finished backsplash.

Frequently Asked Questions About Grouting Tile Backsplash

How long should I wait before sealing grout?

It’s best to allow new grout to cure for 24-48 hours before applying a sealer. This allows the grout to dry completely and prevents issues with the sealer being absorbed unevenly.

What is the easiest way to apply grout?

Using a rubber grout float makes applying grout much easier. Holding it at a 45° angle, spread the grout diagonally across the tiles, pressing firmly to pack the joints. Wipe off excess grout with the float edge.

Should sanded or unsanded grout be used for backsplash?

For tile spaced less than 1/8 inch apart, use unsanded grout. For tile spaced 1/8 inch or wider, use sanded grout. The sand helps fill in wider grout lines between tiles.

How do I get a smooth grout line in the corners?

Use a grout bag or squeegee to neatly pack grout into inside corners. You can also use a finger protected by a latex glove. Apply grout carefully in corners for the smoothest finish.

What is the best way to remove haze from grout?

Using a grout haze remover product is the most effective way to safely remove grout haze without damaging the tile itself. Apply it after grouting and wipe any residue away with a clean, damp sponge.

How soon can I get the backsplash wet after grouting?

Avoid getting the grouted area wet for at least 24-48 hours. This allows the grout to fully cure and prevents issues like washing out or cracking. After 48 hours, lightly dampen the surface to double check grout is fully cured.

What causes cracks in grout lines?

Using too much water when mixing grout can lead to cracks from shrinkage. Not packing joints tightly enough can also cause cracks. Ensure joints are full before wiping. Cracks may also occur if the area gets wet too soon.

How do I fix grout cracking in the corners?

Carefully scrape out the old cracked grout using a utility knife. Pack new grout deeply into the corner joint using a grout bag or finger. Wipe gently with a damp sponge. Avoid excess water on those problem areas.

What’s the best way to apply grout on vertical backsplash?

Work in small sections, no more than 3-4 square feet. Apply grout with firm, even pressure using a grout float or squeegee. Have a damp sponge handy to immediately wipe up drips or runs before moving to the next section.


Grouting tile backsplash involves preparing the surface, mixing the right consistency of grout, packing the joints fully, wiping away excess carefully, and doing a final clean-up of any haze. Being meticulous about getting the grout lines crisp and smooth results in a polished, professional look. Seal the grout once fully cured to protect it. With some patience and the right technique, you can achieve beautiful, flawless grout lines on your new backsplash.