Saltillo Tile Grout Tips

If you’ve landed here, chances are you’ve recently completed the installation of your Saltillo tile and are preparing for the grouting phase. If you’re still in the early stages of research, we recommend starting with our comprehensive guide on how to lay Saltillo tile. But if you’re ready to grout, continue reading.

Because authentic Saltillo tile is handmade, slight variations in size and thickness are natural—no two tiles are exactly alike. Much like snowflakes, each tile brings its own character and charm. To accommodate these variations, installers must carefully plan and maintain appropriate grout spacing during installation.

Traditionally, authentic Saltillo tile floors feature wider grout joints, typically ranging from ½ inch to ¾ inch. This spacing not only ensures a proper fit between tiles but also enhances the rustic, artisanal aesthetic that Saltillo tile is known for.

Because Saltillo tiles are handmade, they often vary slightly in size and shape. To accommodate this variation and maintain a balanced appearance, we recommend:

• 1/2″ to 3/4″ grout joints for traditional installations
• 1/4″ grout joints for more modern or tight-joint layouts (requires sorting tiles by size)

A wider grout line allows for easier installation and emphasizes the rustic, old-world charm that Saltillo tile is known for.

Regular mortar mix (also known as Masonry Mix) is the most traditional and cost-effective option for grouting Saltillo tile. In fact, approximately 95% of our customers choose this material due to its reliability and affordability.

There are several reputable brands available, and most perform similarly in application and finish. If you’re looking to reduce project costs without compromising quality, this is an excellent area to do so.

It’s essential that your installer thoroughly packs the mortar into each terra cotta tile grout line and joint to ensure durability and a clean finish. Once cured, the mortar typically dries to a light cement-gray color. If a different aesthetic is desired, the cured grout can be stained using a compatible concrete stain to achieve your preferred tone.

Sanded grout is another option commonly used with Mexican tile installations. It consists of a blend of sand and cement and is primarily recommended when specific grout color choices are important to the overall design.

While sanded grout provides greater flexibility in color selection, it does have a tendency to shrink slightly as it cures. To ensure strong, long-lasting grout lines, it’s important that the installer thoroughly packs the grout into the joints.

Keep in mind that sanded grout is generally more expensive than traditional mortar mix, making it a less common choice for Saltillo or terracotta tile floors unless a customized grout color is desired.

💡 Pro Tip: Always test grout samples alongside your tiles before final installation to see how the color dries and how it looks in your lighting.

If you plan to add stain to a mortar mix for your Saltillo tile grout, consistency is absolutely key. The amount of stain added to each batch must be measured with precision—every single time. Even slight variations between batches can result in noticeable differences in grout color across your floor.

To achieve a cohesive, uniform look, use the exact same measurements and mixing process throughout the installation. Keep in mind that grout color will naturally lighten as it dries, so it’s wise to prepare a small test area in advance to confirm your color results.

Light gray is the time-tested, traditional grout color for Saltillo tile—and with good reason. This neutral cement-gray tone complements the natural variation and warmth of Saltillo without competing for attention. It’s a color commonly seen in installations around the world, valued for its ability to blend beautifully with the rustic character of the tile.

If you’re aiming for a look rooted in heritage and authenticity, light gray grout is a reliable choice that won’t go out of style. Of course, if you’re feeling adventurous and want to explore bolder grout colors, there’s room for creativity—but gray remains the gold standard for a reason.

For those installing distinctive Saltillo tile patterns—such as hexagons, herringbone, or our signature Riviera design—a contrasting grout color can dramatically enhance the visual impact. By creating clear definition between each tile, the grout draws attention to the craftsmanship and geometry of the pattern itself.

This approach is especially popular in contemporary and eclectic spaces where design details are meant to stand out. With patterned layouts growing in popularity, a bold grout choice can help you achieve a striking, designer-inspired look that feels both modern and timeless.

If you’ve selected Manganese or Antique Saltillo tile, a neutral grout color can be an excellent complement. These tile styles naturally feature warm earth tones, which pair beautifully with taupes, browns, or soft grays in the grout.

Neutral grout colors create a more cohesive, understated look by blending with the tile and minimizing the appearance of grout joints. This approach is ideal for those who want the texture and character of Saltillo to shine—without the grout lines drawing too much attention.

Choosing a neutral grout tone allows the organic beauty of the tile to take center stage while maintaining a timeless, harmonious aesthetic.

Lastly, let’s take a look at cleaning and maintenance suggestions.

No matter which grout color you choose, proper sealing and maintenance are essential to preserve both the appearance and durability of your Saltillo tile floor.

Most homeowners choose pre-sealed Saltillo tile and apply a topcoat sealer after installation. This topcoat not only enhances the finish of the tile—it also seals the grout lines in one step. If your floor is not being topcoat-sealed, be sure to seal the grout lines separately to protect them from stains and moisture absorption.

Keep in mind that grout sealer is not a one-time application. It should be reapplied every few years, depending on the traffic level and the type of sealer used. Darker grout colors tend to show less dirt and grime over time, while lighter shades may require more frequent cleaning.

When sealing grout lines, ensure the sealer penetrates deeply—this may require multiple coats for full protection. A quick test: pour a few drops of water into the grout. If it absorbs immediately, the grout needs additional sealer.

For ongoing care, be sure to check out our guide: How to Clean Mexican Tile Grout for expert tips on keeping your Saltillo floors looking their best.

Saltillo Tile Grout is an important decision when it comes to these Mexican clay tile floors.  On the bright side – grout is an inexpensive part of your project.  Consider function and beauty to make the best decision for your flooring.  Make Every Space Count!

To recap…