How to Tile Kitchen Countertops Like a Pro

Clear your countertop surfaces and read the tape measure to get accurate measurements. This will prevent overspending by buying too many tiles or ending up short because you don’t have enough to cover all the corners. To account for wastage, add 10% to 15% to your square footage total.

Pick a moisture-resistant, easy-to-clean, durable type of tile for high-traffic kitchen countertops. When it comes to popular porcelain vs. ceramic tiles, porcelain is more durable, but ceramic is more budget-friendly. Glass is a stylish and stain-resistant alternative, but it’s not scratch-resistant. 

Cover your cabinet fronts and floors with plastic sheeting secured with easy-to-remove painter's tape to keep them free from mortar or grout splashes. You’ll also need to turn off the water under the sink, then disconnect and remove the fixture to lay tiles around it.

All surfaces should be clean, dry, and free of food crumbs and other debris to prevent bacterial buildup and promote strong adhesion.

If your existing countertop surface is damage-free, even, and without curved edges, you can tile directly on top of it. 

Alternatively, remove your old kitchen countertop and cover the plywood base with a concrete backing board. Starting fresh guarantees level and long-lasting adhesion, especially for high-traffic surfaces.

Cut the cement board to size using a utility knife or circular saw before screwing it into place on top of the plywood base. It’s a dusty job, often best done outside while wearing a particle-filtering respirator mask. 

Use the mantra “mortar, tile, press, spacer, repeat” when tiling your kitchen countertops.

Mix your moisture-resistant, thin-set tile mortar according to the manufacturer’s instructions. Use a notched trowel to apply a layer about 1/4 inch thick to the countertop section you’re working on. 

Press tiles into place, starting at the wall side of the countertop to help maintain straight lines. Work in sections you can tackle in less than 30 minutes to prevent the mortar from drying out.

Choose the right tile spacers and place them to help you achieve even grout lines, wiping away excess mortar with a damp, clean cloth as you go.

Work your way out to the edge, cutting tiles to fit. Applying edge tiles and any backsplash with flexible mastic allows for expansion and reduces the risk of cracks appearing.

A wet tile saw is the best tile tool for cutting tiles, but it's pricey. If you don’t own one and can’t rent one, you can use a manual tool cutter, but the work is trickier and more time-consuming.

Once the mortar has set, remove the tile spacers and wipe away any stray mortar with a damp cloth. This typically means leaving it overnight and returning to do the finishing touches the following day. 

If you’ve opted for porous tiles (like ceramic or terracotta), applying a sealant at this stage will help prevent premature staining, moisture damage, and excess mold or mildew buildup. Doing it before grouting prevents the tiles from developing a dirty appearance before you even finish the job.

Roll or brush the sealant into the tile surface and allow it to dry per the manufacturer’s instructions before moving on to the grout work.

Learning how to grout tiles isn't too tricky—it's all about being smooth and methodical—and picking pre-mixed grout simplifies the process. 

Scoop the grout onto a grout float and drag it diagonally across the tiles at a 45-degree angle to smear the grout into the seams. Wipe away excess grout with the float.

Wipe the tiles' surface with a damp (not soggy) sponge to remove any remaining grout haze before it sets. Polishing with a dry microfiber cloth after the grout has set will help the tiles shine.

Mistakes to Avoid When Tiling Kitchen Countertops

Steer clear of common kitchen countertop tiling mistakes to achieve a neat, hassle-free finish.

• Do a dry run: Testing the tile positions before applying the mortar can avoid a layout that relies on cutting small, thin pieces that will be less durable.

• Don’t skimp on mortar: The tile should have at least 80% mortar coverage for good adhesion. 

• Don’t rush tile placement: Any mistakes can ruin the look of subsequent rows of tiles, and as the mortar sets, it can be difficult to remedy errors.

• Be patient: Don’t apply grout until the mortar is fully cured. Shifting tiles and cracked grout can compromise moisture resistance and the job’s longevity.