How to Tile a Backsplash Around a Window

Tiling a backsplash around a window requires careful planning and execution to ensure a seamless look. With some preparation and the right techniques, you can achieve a polished backsplash that beautifully frames the window.

Measuring and Planning the Layout

The first step is to take precise measurements of the backsplash area including the window dimensions. Make sure to measure the width across the top, middle, and bottom of the window. This will allow you to plan the tile layout to fit properly.

It’s important to map out the tile layout on paper, sketching the window area to scale. Plan for edge pieces and inside corner pieces needed to frame the window neatly. A laser level can help mark clean layout lines to follow.

Decide on the tile size, pattern, and orientation that will best suit the space. Smaller tiles like subway tile are commonly used as they can seamlessly wrap the window. Choose a layout that limits thin slivers of tile.

Prepping the Surface

Thoroughly clean the backsplash area with soap and water. The surface must be free of dirt, grease, and debris for the tile to adhere properly.

Fill any holes or imperfections with spackle and sand smooth. Prime the surface if painting a different color before tiling.

Apply painter’s tape vertically along the edges to protect the window and walls. Use spacers to account for the thickness of the tile between the glass and tape.

Spread thin-set mortar evenly across the surface using a notched trowel. Work in sections for maximum adhesion as you go.

Cutting and Installing the Tile

Measure and mark the central point across the top of the window to center the tile work. Use this plumb line to keep tile courses straight.

Cut border tiles to the proper width to frame the window using a wet saw. Cut carefully and slowly for clean edges.

Apply thin-set mortar and firmly press border tiles around the window perimeter. Check they are level as you work.

Fill in the field tiles, working out from the borders in sections. Use tile spacers to achieve even grout lines.

For inside corners, miter cut the edge tiles at a 45° angle. Alternatively, use bullnose tiles or caulking for inside corners.

Let the thin-set mortar fully cure according to manufacturer instructions, usually 24 hours.

Grouting and Finishing Touches

Mix grout according to package directions. Apply grout over the tile surface using a rubber grout float. Push into joints and clean excess.

Once grout is dry, buff the tiles gently with a soft cloth to polish. Use caution around the window caulking.

Seal the grout lines with a penetrating sealer to protect from moisture and staining. Avoid getting sealer on the glass.

If needed, trim any perimeter tiles evenly using a multi-tool or file to fit after grouting. Apply caulking along the window trim.

Finally, wipe the window and tiles clean. Admire the beautifully framed window and enjoy your fresh, new backsplash!

Frequently Asked Questions

What type of tile works best around a window?

Smaller tile sizes like subway tile, mosaic tile, and penny tile are ideal choices as they can wrap the window opening neatly. Standard 4×4 tiles may also work well. Avoid large format tiles or uneven stone tile.

How do I account for the window trim and casing?

Leave a small 1/16” gap between the tile and window trim that can be filled in with caulk after grouting. Use tile spacers to maintain the gap during install. Or measure to install tile flush with the casing.

What if the window isn’t centered on the backsplash?

If the window is off-center, you can still balance the look by aligning the tiles to the window edges. Adjust the layout to have similar size cut border tiles on both sides rather than centering on the backsplash.

Can I use a decorative tile border around the window?

Absolutely! For a pop of color or interest, use a border or decorative tile to accent the window. Contrasting tiles or mosaic create a frame to make the window stand out.

How do I finish the lower edge of the backsplash around the window?

You can end the lower tiles along a level line across the bottom of the window. For a built-in look, continue tiles down to the countertop. Add an edging such as bullnose tiles or countertop overhang to finish the edge.


Tiling around a window requires careful prep and precision when cutting and placing your tiles. With proper planning and layout, the right tools, and some tile-cutting know-how, you can achieve a seamless look. Use spacers, work in sections, and take your time for best results. The finished framed window will provide a beautiful focal point enhancing your new backsplash.