How to Cut Tile Backsplash

Installing a tile backsplash can transform the look of your kitchen or bathroom. While tiling may seem intimidating, it’s actually a DIY project many homeowners can tackle. Learning how to properly cut and install tile backsplash is an essential skill. With the right tools, materials, and techniques, you can achieve a professional-looking backsplash tile installation.

Getting Started with Tile Backsplash

Before beginning your project, ensure you have all the necessary tile backsplash materials:

  • Tile – Ceramic, porcelain, glass, and natural stone are popular options. Purchase extra tiles to account for breakage and cuts.
  • Tile adhesive – Choose an adhesive suitable for your tile and project location.
  • Grout – A sanded grout is best for joints 1/8 inch or larger.
  • Trowel – Pick a trowel suited for your tile size and adhesive type.
  • Tile cutter – Choose a cutter fit for your tile material. Options include snap tile cutters, nippers, and wet saws.
  • Spacers – Plastic spacers maintain even grout joint size.
  • Grout sealer – Protects grout from stains.
  • Safety gear – Glasses and gloves are essential safety items.

Once you have the needed materials, follow these general steps:

Preparing the Surface

Ensuring the surface is clean, smooth, and structurally sound is crucial for proper tile adhesion.

  • Clean surface thoroughly. Remove existing backsplash if present.
  • Fill any holes or imperfections with patching compound. Allow to fully cure before tiling.
  • Apply painter’s tape around the perimeter to protect the walls.
  • Apply thinset mortar adhesive if needed to level and smooth the surface. Let it cure completely.

Thorough surface prep prevents tiles popping off later.

Laying the Tile Backsplash

With a prepared surface, you can move on to tiling:

  • Plan your tile layout. Dry fit tiles if desired.
  • Mix thinset mortar adhesive according to package directions.
  • Apply thinset using the notched edge of the trowel to comb it evenly.
  • Press tiles into the thinset with a slight twisting motion. Use spacers for consistent joints.
  • Push tiles firmly to flatten and adhere properly. Check for 100% coverage.
  • Allow thinset to cure 24 hours before grouting.

Take your time laying the tile to keep everything even and properly spaced.

Cutting Tiles

Most tile backsplash projects require cutting tiles to fit around outlets, pipes, and edges:

  • Measure and mark tiles to be cut with a pencil.
  • For straight cuts, use a snap tile cutter aligned on the pencil mark. Score the tile then snap it.
  • Use tile nippers for freehand or contour cuts. Nip small fragments bit-by-bit.
  • For curved cuts, use a wet saw with a diamond blade. Cut slowly.
  • Smooth cut edges with sandpaper or a whetstone for a professional finish.

Save the tile fragments – they may come in handy for filling small gaps later.

Grouting the Backsplash

Grout fills the joints, seals the tiles, and gives a finished look:

  • Allow thinset to cure fully before grouting, usually 24 hours.
  • Apply grout sealer to tiles if needed, for porous surfaces like natural stone.
  • Follow package directions to mix grout, allowing 5-10 minutes slake time.
  • Use a grout float or squeegee to spread grout over the tile surface, forcing it into joints.
  • Let it set slightly, then wipe away excess grout with a damp sponge.
  • Once grout has cured, use a soft cloth to polish and seal the surface.

Watch for gaps or low spots and re-apply grout as needed before it fully cures.

Caring for Your Tile Backsplash

With the installation complete, maintain your backsplash with proper care:

  • Use a pH-neutral cleaner and avoid harsh chemicals which can degrade grout or etch tiles.
  • Re-apply grout sealer every 1-2 years to protect from stains.
  • Inspect for any cracks or damage over time. Regrouting or replacing individual tiles can refresh the look.
  • For heavy steam areas, apply caulk where the backsplash meets countertops or walls. Re-caulk as needed.

With careful installation and maintenance, your tile backsplash can provide many years of beauty and protection.

Frequently Asked Questions About Cutting Tile Backsplash

How do I make straight cuts in my tile?

Use a snap tile cutter for straight cuts. Position the tile in the cutter aligned on your measurement mark. Score the tile by running the cutter wheel across it. Then snap the tile downward to make a clean break along the score line.

What tool should I use to make curved or irregular cuts in tile?

For curved, L-shaped, or irregular cuts, tile nippers are ideal. Nippers allow you to break off small fragments of the tile bit-by-bit to achieve the shape you need. A wet saw with a diamond blade can also be used for more precise curved cuts.

What can I use to smooth rough tile edges?

After cutting, tiles often have slightly sharp or ragged edges. Use a silicon carbide stone or sandpaper to smooth these edges for a professional finish. Rub the cut edge back and forth along the stone or sandpaper until smooth.

How do I cut small pieces of tile for filler areas?

Save the leftover fragments and irregularly shaped pieces from cutting whole tiles. These smaller bits may come in handy to fill in small gaps, corners, or around outlets. Nippers and wet saws let you custom cut small filler pieces as needed.

What safety gear should I use when cutting tile?

Always wear safety glasses to protect your eyes from flying shards when scoring, snapping, and nipping tiles. Wearing a dust mask and gloves is also advisable, especially when using a wet saw that sprays water and tile dust.

How can I cut tile that is mounted on a mat or mesh?

With tile sheets mounted on mesh or mats, simply cut through both the tile and backing material together. Use a utility knife and straightedge for straight cuts across the mats. A wet saw also works well for precise cuts.

Cutting tile backsplash is easier than it appears with the proper tools and techniques. Patience, precision, and attention to safety are key for both novice and experienced tilers. Following these techniques can lead to a stunning, professional-looking backsplash installation.


Installing a tile backsplash can take your kitchen or bathroom from bland to beautiful. While cutting tile may seem challenging, having the right materials and using proper techniques makes the process very manageable as a DIY project. Carefully plan the layout, prep the surface, cut any specialty tile pieces, then apply the tiles in a uniform grid using spacers. Allow time for thinset and grout to cure fully before completing the next steps. Always use safety gear when cutting to avoid injury. Your efforts will pay off with a stunning, quality backsplash you can enjoy for years to come. With some patience and persistence, you can master the art of cutting tile backsplash.