How to Tile a Wall: A 14-Step Guide

You need your wall surface to be clean, dry, and smooth. Use a mix of vinegar and water or a commercial cleaning spray to wipe down the wall, then allow it to dry. If the wall is textured, has holes or uneven places, or isn’t completely smooth, take the time to add a layer of drywall compound so that the wall surface is as smooth as it can be. This will give your new tiles a solid surface to adhere to and help make your hard work as sturdy and long-lasting as possible.

Once your walls are ready, use a level and a tape measure to find the perfect middle point of your tiling area, vertically and horizontally. Don’t use fixtures, countertops, or other objects as a reference, as these aren’t always level. Always align the tape measure with a level to be sure you’re making a perfectly straight line.

Using a chalk line, mark the midpoint with an intersecting horizontal and vertical line (a regular piece of chalk and string will also work in a pinch). If you’re doing a DIY kitchen tile backsplash or similar project where you'll work around cabinets and other objects of varying heights, split the area into quadrants and mark the mid-lines for each.

Next, test your tile layout by taking a sample tile and marking the location of a row of tiles along the horizontal and vertical mid-lines. Be sure to include the thickness of the grout lines. If you follow some of the more complicated tile patterns in kitchen and bathroom tile trends, you may need to cut tiles to fit using a diamond wet saw or a tile cutter.

Once you’ve drawn up your rough layout, step back and check how it looks. If anything looks wonky, or if there are a lot of areas where tiles will need to be thinly sliced, adjust your starting point until you find an efficient and visually-pleasing layout.

Especially if you’re learning to install wall tile for the first time, you’ll want to use some batten to ensure your tiles stay straight. A piece of scrap lumber around 1 inch thick and running the length of the tiling area will work nicely for this step.

Place the wood batten board so its top edge aligns with the horizontal midline you created. Use your level to ensure it’s perfectly straight, then screw it to your wall studs to hold it in place. After placing your tiles against the batten, you can unscrew and remove them.

After you’ve planned your layout and placed your batten board, mix a batch of thin-set mortar according to the manufacturer’s instructions. It’s easiest to start with the powder in a bucket and slowly add water, mixing until it forms a thick paste. Once thoroughly mixed in, let it rest for about 15 minutes and stir it up again.

Next, apply the mortar to the wall using a notched tiling trowel, starting at the center point. Cover small areas around one or two rows at a time or whatever you can tackle within 30 minutes. Take care not to hide your layout lines with the adhesive.

Hold your trowel against the wall at a 45-degree angle and use a long, sweeping motion to apply a straight, even coat of mortar. Then, use the notched side of the trowel to create a pattern of ridges in the wet adhesive. Grooves can go in either direction; be sure that all of your lines stay roughly parallel.

Once you’ve applied your mortar, install your wall tile onto the prepared area, starting from the center and working along the horizontal guidelines. Use firm pressure to lay the tiles into place. 

Add tile spacers between each tile as you go to ensure uniform spacing.

After laying your first row, use your level (or a laser level) to ensure the row is level. Continue this process row by row, using tile spacers to keep your layout even.

The fun begins as you see your new tiled wall take shape. Once you have your first row set and the spacers in place, you can build on that base by adding new tile rows above it. Carefully measure the tiles against the space available and use your wet tile saw or snap tile cutter to cut tiles as needed before setting any tiles. This will prevent your thinset from drying.

Work across the wall, installing one row at a time, then spacers, then the next row. Set tiles intentionally and carefully; any mistakes you make will impact every tile and row next to and above them, and errors will be hard to fix as the thinset hardens.

Double-check the directions on the mortar, verifying how much time tiles should set before you apply grout. Some mortar takes 24 hours to set; others need more time to fully cure. Most experts recommend letting freshly grouted tiles cure for at least 48 hours before grouting. This ensures that the thinset is completely hardened and tiles won’t shift as you remove spacers, apply grout over and between the tiles, and wipe off excess grout. 

Be patient! Curing and waiting are as important as careful setting. If you don’t wait long enough before grouting, you risk shifting tiles and can disrupt all of your hard work. Since resetting tiles after partially cured is hard, protect your time investment by following all manufacturer directions.

When you’ve finished placing your tiles and are happy with the result, mix up your grout according to the manufacturer’s instructions. Typically, you’ll start with water in a bowl or bucket and add the grout powder until it becomes a thick paste. Don’t mix more than you can spread in a 20-minute timespan, as it could dry out before you’re finished.

You can also add any desired additives during this step, such as those for waterproofing or changing the color of the grout.

Now you can grab your grout float and start spreading the grout, working in square-shaped sections. Hold the float against the tile at a 45-degree angle and use diagonal swipes to push the grout into the gaps. Avoid swiping in horizontal or vertical lines parallel to the tiles, as this might push grout through the gaps. After applying the grout, use your grout float to pick up as much excess grout off the tiles as possible.

Wait around 20 minutes for the grout to partially cure. Then, use a clean, damp sponge to wipe the remaining grout off the tiles. Be sure to rinse your sponge frequently so you’re not re-depositing dirty grout water onto the tiles.

Next, wait around three hours for your grout to cure fully or however long the manufacturer’s instructions specify. Note that some additives take longer to cure, so read the instructions for those, too.

After your grout cures, use a rag to clean off any remaining grout and apply a grout sealer to the grout. This step will help prevent mold growth and comes in various brush-on or spray-on solutions. Again, refer to the manufacturer’s instructions to make sure you’re applying the sealer correctly.