Zellige Grout Color Guide: How to Pick the Right Grout for Your Tile

For most zellige tile, unsanded grout in a color close to the tile is the safer default: it won't scratch a glazed surface and it lets the tile's natural variation stay the focal point. The main exception is a joint wider than about 1/8 inch (3mm), which needs a sanded or high-performance grout for strength. Beyond that, the right grout depends on where the tile is going (a shower needs different performance than a backsplash) and whether you want the grout to disappear into the tile or frame it.

Zellige is handmade, so no two tiles are perfectly square or perfectly flat. That irregularity is the whole appeal, but it also means grouting zellige isn't quite the same job as grouting a machine-pressed subway tile. This guide walks through grout type, joint width, color strategy, and the mistakes that actually ruin a zellige install.

In this article

• Should you use sanded or unsanded grout on zellige tile?
• How wide should zellige grout lines be?
• Should your grout match or contrast your zellige tile?
• What's the best grout for a zellige shower or wet area?
• Zellige grout cheat sheet
• What mistakes should you avoid when grouting zellige?
• FAQ

Should You Use Sanded or Unsanded Grout on Zellige Tile?

Unsanded grout is the standard recommendation for glazed zellige. The sand particles in sanded grout can scratch a glossy or satin glaze during application and cleanup, especially on tiles like glossy Royal Blue zellige, where a scratched surface is much harder to hide than on a matte finish. Unsanded grout also spreads more smoothly into the tight, uneven joints that zellige tends to have.

The trade-off is strength. Unsanded grout is generally rated for joints up to about 1/8 inch, and it can shrink or crack in anything wider. If your layout needs a wider joint, either move to a sanded grout and test it on a scrap tile first, or use a high-performance grout (urethane or epoxy-based) built to bridge both narrow and wide joints without the abrasive sand. These cost more per bag but hold up better over time, particularly in a shower or kitchen backsplash that sees daily wear.

How Wide Should Zellige Grout Lines Be?

Because zellige tiles vary slightly in size and shape, most installers run wider joints than they would on a factory tile, typically 1/8 inch to 3/16 inch (3mm to 5mm), instead of the 1/16 inch hairline joint common on rectified porcelain. That extra width gives each tile room to sit naturally without forcing it square against its neighbor, which is what lets the handmade grid pattern read the way it's supposed to.

Going tighter than that is one of the most common zellige installation mistakes: it can chip the tile's soft, slightly rounded edges during setting and leaves almost no room for the natural movement that comes with a handmade product. If you're working with a pre-assembled mosaic sheet rather than individual tiles, the joint spacing is largely set by the mesh layout, so check the sheet's spacing before planning your grout width and quantity.

Should Your Grout Match or Contrast Your Zellige Tile?

This is a design choice, not a technical one, and both directions work.

Matching grout (a shade close to the tile) makes the wall read as one continuous, textured surface. It's the better pick when you want the tile's own color variation, not the grid, to carry the room. This is a common approach with a soft, warm tone like Off-White zellige, where a matching grout keeps the wall looking calm and monolithic.

Contrasting grout does the opposite: it outlines every tile and puts the handmade grid front and center. This works especially well with a bold, glossy color like Royal Blue, where a crisp white or light grey grout makes the pattern pop instead of disappearing into the color.

What's the Best Grout for a Zellige Shower or Wet Area?

Wet areas put more stress on grout than anywhere else in the house, so this is where a high-performance grout earns its cost. A urethane or epoxy-based grout resists water absorption and staining far better than standard cement-based grout, which matters most in a shower where the joints are wet daily and mildew has every opportunity to take hold.

For a warm, sand-toned tile like Sahara Beige zellige, a matching sandy grout keeps a shower feeling seamless from floor to ceiling. Whatever grout you choose for a wet area, check the specific product page for that tile's own care and sealing notes before you start, since finish and porosity can vary between colors even within the same collection.

Zellige Grout Cheat Sheet

What Mistakes Should You Avoid When Grouting Zellige?

Using sanded grout on a glossy glaze without testing it first. Even fine sand can dull or scratch a high-gloss surface during float and cleanup. Always test on a spare tile.

Grouting joints too tight. Zellige needs room to sit naturally. Joints under 1/8 inch increase the odds of chipped edges during installation and cracked grout later.

Not accounting for a mosaic sheet's built-in spacing. A pre-assembled sheet like the Rust Brown & Sage Star mosaic already has its joint width set by the mesh, so measure that before buying grout, rather than assuming the same width as a hand-laid backsplash.

Skipping a small mockup. Grout color looks different wet, dry, and cured. Grout a small test area, let it cure fully, and check it in the room's actual light before committing to a full wall.

Forgetting the specific tile's own care notes. Sealing and cleaning requirements can differ between a glazed and an unglazed finish, and even between colors in the same collection, so always check the individual product page rather than assuming one rule applies to every zellige tile.

Frequently Asked Questions

Do I need to seal zellige tile before grouting?

It depends on the tile's finish. A glazed surface is generally non-porous and doesn't need sealing before grouting, while an unglazed or matte tile can be more porous and may benefit from a pre-sealer to prevent grout haze from staining the surface. Check the care notes on the specific product page for the color and finish you're installing.

Can I use the same grout for the tile and the joints in a mosaic sheet?

Yes, as long as the grout is rated for the joint width the mesh backing sets. Most pre-assembled mosaic sheets use narrower joints than a hand-laid wall, so an unsanded or high-performance grout is usually the right fit.

How long should grout cure before I use the shower?

Most cement-based grouts need about 48 to 72 hours to cure before regular water exposure, and some high-performance grouts allow earlier use. Always follow the specific product's instructions, since cure times vary by brand and formula.

Will grout color fade over time?

Cement-based grout can lighten or discolor with wear, especially in high-traffic or high-moisture areas, unless it's sealed and maintained. Urethane and epoxy-based grouts are formulated to resist fading and staining better over the long run, which is part of why they're a common choice for showers.

Should grout lines be the same width across an entire zellige wall?

Close to it, but not perfectly identical; that's expected with a handmade tile. Aim for visual consistency rather than machine-precision, and let small natural variation in joint width be part of the tile's character instead of trying to force it out.