Sanded vs Unsanded vs Epoxy Grout

Sanded Grout

Sanded grout is a cement-based grout mixed with fine silica sand. The sand provides structural strength and prevents the grout from shrinking and cracking as it cures.

• When to use: Any grout joint that is 1/8 inch or wider. It is the standard choice for most floor tiles.
• Pros: Strong, inexpensive, easy to work with, prevents shrinkage.
• Cons: Can scratch easily polished surfaces (like soft marble or certain glass tiles). Can harbor stains if not sealed.

Unsanded Grout

Unsanded grout is a cement-based grout with no sand added. Because it lacks sand, it is smoother but prone to shrinkage if used in large gaps.

• When to use: Grout joints that are strictly 1/16 inch or smaller. Also used for highly polished natural stone, glass, and metal tiles that could be scratched by sanded grout.
• Pros: Non-scratching, smooth finish, clings well to vertical surfaces (like walls).
• Cons: Will crack and collapse if used in joints larger than 1/8 inch.

Epoxy Grout

Epoxy grout is made from epoxy resins and a filler powder. It contains no cement.

• When to use: High-moisture areas (showers, pools), commercial kitchens, or anywhere you want a stain-proof, maintenance-free joint.
• Pros: Completely waterproof (does not need sealer), highly stain-resistant, extremely durable, won't crack.
• Cons: Expensive, sets very quickly (short pot life), difficult to install for beginners. Can leave a permanent "epoxy haze" on the tile if not cleaned up perfectly during installation.