How to Create a Tile Backsplash


Create a unique focal point in your kitchen by making a backsplash with wall tile

Create a unique focal point between your cabinetry and countertop by making a kitchen backsplash with wall tile.  

Check out our Tilescapes page to browse through trends in tile and to gather ideas for your own DIY backsplash.

The Home Depot Community also offers tips on how to do a quick and easy backsplash update  and how to apply thermoplastic panel backsplashes.


• Thin-set mortars (we used FlexBond) require mixing, which will add time and labor to your project compared to a premixed product like SimpleSet. Many thin-set mortars have higher bond strengths and other benefits vs. premixed products.
• If you use light colored tile, select a white mortar, but read the packaging to ensure it is compatible with your tile.


Measure your wall

To determine the amount of tile you need for your kitchen backsplash, calculate the wall space. If you only have one section to cover, simply multiply the width and height of the wall to get a square footage. The square footage determines how much tile you’ll need.

You should also include an additional 10 percent of tile to cover small gaps to use as replacements for any pieces that may get damaged. There’s a little more calculation involved when you have walls with disproportionate sections, such as the one we’re working on.

You have four separate areas to measure. Label section “a” as the space on the left side between the base of the cabinetry and countertop. Space “b” is the midsection of the wall. Space “c” is the space on the right side between the base of the cabinetry and countertop. And space “d” sits under the window.

Multiply the width and height of each section, then add the sums of each section to get the total square footage of tile needed to complete the project. Remember to include 10 percent of the sum for spare tile pieces, and to ensure you have enough mortar, mastic and grout.

Prep your workspace

• Remove all appliances and cookware from the countertop. You may need to move the stove slightly away from the wall so you can easily tile behind it. Disconnect the stove for added safety.
• Place a layer of cardboard or heavy-duty craft paper over your countertop to protect it from debris. Tape off the existing countertop or backsplash as well as the underside of the cabinets to protect those surfaces.
• Shut off power to any nearby electrical outlets or light switches before you remove the cover plates and begin the tiling work.

Prep the wall

• Inspect and repair your kitchen walls to prevent hidden damage from showing up later.
• Patch any holes with spackling compound and sand the area lightly to a smooth surface.
• Use mild soap detergent and water to clean your walls. Allow the surface to dry before installing the backsplash. Painted walls can be wiped down with tri-sodium phosphate and sanded gently. Glossy surfaces are typically sanded and deglossed. Wipe the wall with a soft cloth to ensure a clean, dry surface.
• Check the wall behind the stove for any oil or grease stains. These should be cleaned with a degreaser or primer if you have tough stains. Wipe the surface and allow it to completely dry.

Pre-lay the tile

• Place the tile across the wall and mark your starting and end so you’ll know how much tile to use and where to position the tiles.
• Your starting point depends on the most viewable area of the wall. Work your way outward and upward from there. A straight edge or level can help you keep the tile even along the wall.
• You may need to cut tiles to properly fill your backsplash area. Use a tile cutter for ceramic or porcelain tiles, and a tile nipper for any circular incisions. Use a wet saw if you are cutting natural stone to prevent the tile from chipping or breaking.

Prepare the mortar

• To prepare powdered thin-set mortar for natural stone mosaic tile, fill your bucket with water in the amount listed on the package. Gradually add the thin-set powder, mixing it thoroughly.
• Let the mixture stand for 5 to 10 minutes, then mix it again without adding additional water.
• When you’re finished mixing, you’ll have a limited time to use it. In many cases, FlexBond can be used up to 4 hours after it’s been mixed.
• If you’re looking to save time on your project, SimpleMat adheres to the wall so that you can tile immediately and move on to grouting.

Apply the mortar

• Begin with a 2-foot section and apply the mortar to the wall, spreading a thin, skim layer of the mortar with the flat side of the trowel. Press at a 45-degree angle. This will ensure that the mortar fully adheres to the wall.
• Using the notched edge, add a little more mortar onto the trowel and comb even ridges in one direction. Make sure your notch trowel corresponds with the tile you’re installing. Natural stone tile typically works well with a notch trowel that is ¼ x ¼-inch in size.

Tip: Work in small sections to prevent the mortar from drying or forming a skin as you apply the tile. Clean any excess mortar off the face of the tile with a sponge.

Lay the tile

• Place the mosaic sheets along the wall. Add tile spacers if you need to keep the tile pieces lined up. Follow the lines that you made when the tiles were dry fit to the wall.
• Slightly rock the sheet up and down perpendicular to the trowel lines to collapse the ridges and help the tile settle into place, and flatten the tile with a grout float if necessary.
• If the space between the top row of tiles and cabinetry is greater than an inch, cut your extra tile pieces to fit the space. If the gap is smaller, consider installing a piece of moulding to hide it.

Dry and pre-seal the tile

• Allow the mortar and tile to dry completely following the manufacturer’s recommendations. This usually takes 24 hours, but it depends on the mortar used and the temperature of your home.
• You also want to use pre-sealer for natural stone at least three hours before you apply the grout. Pre-sealer helps protect the stone from staining.

Clean the tile and prepare the grout

• We used a poly blend sanded grout, which is a cement-based product. A sanded grout is great for joints 1/8 inch or greater. For grout joints smaller than 1/8 inch, use poly-blend non-sanded.
• Wipe the tiles clean with water before you apply poly-blend sanded grout to natural stone mosaic tile. Carefully follow the preparation details on the package.
• Fill a bucket with the appropriate amount of water. Then, gradually add the grout powder and mix thoroughly.
• Let the mixture stand for 5 to 10 minutes, then re-mix it without additional water. Periodically re-mix the grout to keep its consistency.

Grout the tile

• Once the grout is mixed, you’ll have a limited time to use it. Generally, poly blend can be used up to two hours after it is mixed. Work in sections, so that you can complete an area within 30 minutes.
• Apply the grout with the grout float at a 45-degree angle. Work diagonally. Wipe off any excess grout with the grout float held at a 90-degree angle.
• Using a damp sponge, remove the grout from the face of the tiles in a circular motion and shape the grout joints fully. Rinse out the sponge in clean water frequently.
• Repeat this process several times. Limit the amount of water you use to avoid washing out the grout joints.
• After about 3 hours, you can remove the last haze of grout. Use a dampened cheesecloth or sponge to wipe down the face of the tiles.

Seal the tile

• Once the grout is fully dry, usually 24 hours to 3 days later, apply grout sealant to protect your backsplash from staining. After the sealer is dry, you can add a small amount of latex caulk to the base of your backsplash where it rests against your countertop.
• Replace your appliances and cookware, and restore the power to your electrical outlets.
• To maintain your backsplash, wipe it down occasionally with a kitchen or glass non-acidic cleaner to keep it looking great.