How to Tile a Subway Backsplash

Introduction

Tiling a subway backsplash in your kitchen is a great way to add visual interest and protect your walls from splashes and spills. Subway tiles are rectangular ceramic tiles that are typically 3 by 6 inches, with a modern, clean look. They are affordable, easy to install, and come in a huge range of colors and materials.

Installing a subway tile backsplash is a DIY-friendly project that can transform the look of your kitchen. With some planning, patience, and the right materials, you can have a stunning new backsplash in a weekend.

In this comprehensive guide, we will walk you through the entire process of how to tile a subway backsplash in your kitchen, from prepping your workspace to grouting the finished product. Let’s get started!

Choose Your Tile

The first step is selecting the subway tile you want to use. Consider the following:

• Color – Subway tiles come in every color imaginable. Popular options include white, light grey, black, and blue. Choose a color that complements your cabinetry, countertops, and overall kitchen aesthetic.
• Material – Ceramic and porcelain are the most common. Ceramic is more prone to cracking but also cheaper. Porcelain is harder, more stain-resistant, and durable. Glass subway tiles are also available.
• Gloss level – Matte, satin, or high-gloss. Matte is the most popular as it hides imperfections well. Glossy tiles show more flaws.
• Accent tiles – Many people use subway tiles for the whole backsplash, but some add accent tiles for visual interest. Popular options are mosaics, elongated tiles, or tiles with patterns.
• Grout color – Lighter grout works best with white tiles, dark grout with colored tiles. Contrasting grout highlights the tiles.

Once you select your tile, order 15-20% extra to account for breakage, cuts, and future repairs.

Gather Your Materials

In addition to the tile, you will need:

• Tile adhesive (thinset mortar)
• Grout
• Grout sealer
• Trowel for spreading adhesive
• Grout float for applying grout
• Spacers to create even grout lines
• Tile cutter for scoring and snapping tiles
• Wet saw for intricate or angled cuts
• Grout cleaning sponge
• Tile sealer (optional)
• Safety gear – gloves, goggles, knee pads

Make sure all materials comply with manufacturer instructions. Having all materials on hand ahead of time ensures an efficient installation.

Prepare the Surface

Proper prep work prevents problems down the road. To prepare the surface:

• Remove existing backsplash if there is one. Scrape off old adhesive.
• Thoroughly clean the wall surface. Remove any grease, dust, or debris.
• Fill any holes or uneven spots with spackle and sand smooth.
• Prime the surface if painting. Use primer compatible with your thinset choice.
• Mark the tile layout on the wall with a pencil so your pattern is straight.

Prepping properly provides an even, smooth surface for the tile to adhere to. Rushing this step can lead to future tile popping off.

Spread the Thinset Mortar

Mix the thinset adhesive per manufacturer directions. Use a notched trowel to spread it evenly across a small section of the wall, holding the trowel at a 45° angle.

• Apply only enough thinset that can be tiled in 30 minutes before it skins over.
• Use the flat side of the trowel to flatten ridges and create uniform thickness.
• Press firmly to work the thinset into the wall surface.

The right thickness of adhesive is key – too little and the tiles won’t adhere, too much and you’ll have a mess trying to flatten the tiles.

Install the Subway Tiles

Now the fun part – putting up the tiles! Follow these tips for flawless installation:

• Work in small sections so the thinset doesn’t dry before tiles are applied.
• Place the bottom row of tiles first for support. Level and align them along your pencil line.
• Apply a small amount of thinset to tile backs and firmly press into place, using spacers to maintain even grout line width.
• Cut border and accent tiles as needed with tile cutter or wet saw.
• Periodically remove a tile and check thinset coverage on the back – there should be at least 80% adhesion.
• Allow thinset to cure fully (24-48 hours) before grouting.

Take your time laying the tiles smooth and evenly. Consistent alignment and properly spaced grout lines will give a clean finished look.

Apply the Grout

Grout fills the seams between tiles with a waterproof material to finish the installation. Follow these tips when grouting:

• Allow thinset to fully cure before grouting, typically 24-48 hours.
• Apply grout sealer to the tiles first as a protective barrier.
• Use a grout float to spread grout over the surface, pressing into joints. Hold the float at a 45° angle.
• Work in small sections and wipe excess grout off the tiles with a damp sponge.
• After grout becomes firm, polish and shape joints with a damp sponge.
• Allow grout to dry completely, then apply grout sealer evenly according to package directions.

Take care to fully pack joints to avoid crumbling grout. Removing excess grout promptly will make cleanup much easier.

Seal and Finish

Sealing the grout and tiles provides stain protection and easier cleaning.

• Allow grout to cure fully before sealing, generally 72 hours.
• Apply tile sealer evenly to entire surface following package instructions. Two coats are recommended.
• Avoid walking on tiles or using the backsplash for at least 24 hours after sealing.

Finally, caulk along the countertop-backsplash joint and where the backsplash meets the wall. Then stand back and admire your handiwork!

FAQ

How long does it take to tile a backsplash?

Tiling a standard backsplash takes 2-3 days – Day 1 for surface prep and applying thinset, Day 2 for installing tiles, and Day 3 for grouting once thinset has cured.

What thinset is best for backsplash?

For walls, a polymer-modified thinset is recommended as it offers maximum adhesion and resistance to moisture and shrinkage. Consult manufacturer instructions.

Should you seal subway tile before or after grouting?

Sealing before grouting provides some protection from staining but can make grout clean-up more difficult. Most experts recommend sealing after.

What color grout is best for white subway tile?

White and light grey grout both complement white subway tiles well. White provides a cleaner, more seamless look. Light grey grout adds subtle contrast.

How do you cut subway tiles?

Use a manual tile cutter for straight cuts and a wet saw fitted with a diamond tile blade for detailed cuts like L-shapes. Mark cuts carefully and score tiles before snapping.

Conclusion

Installing a subway tile backsplash boosts your kitchen’s visual appeal and makes a big impact for a small price. With some planning and effort, you can achieve a professional-looking finish. Focus on proper prep work, watch tile alignment, allow materials to fully cure, and take your time with grouting. Your new backsplash will provide a stylish focal point you’ll enjoy for years to come.