When starting a tile project, one common question people ask is sanded vs unsanded grout — which one should you use? Choosing the right grout is very important because grout not only fills the grout line between tiles but also supports tiles and prevents moisture from getting underneath. In simple terms, sanded grout contains fine sand particles, while unsanded grout is smooth and does not contain sand. Both are used for different tile spacing and surfaces, so understanding the difference helps you choose the right grout for your project.
What Is Sanded Grout?
Sanded grout is a type of grout that contains fine sand particles. The sand makes the grout stronger and helps prevent cracking, especially in wider grout lines. Sanded grout is usually used when grout lines are wider than 1/8 inch. Because of the sand, this grout is more durable and is commonly used for floor tiles, hall tiles, outdoor tiles, and high-traffic areas.
Advantages of Sanded Grout
Strong and durable
Prevents shrinking and cracking
Best for wide grout line
Good for floor tiles
Suitable for high traffic areas
However, sanded grout can scratch delicate tiles like glass tiles or polished stone tiles, so it should not be used on sensitive surfaces.
What Is Unsanded Grout?
Unsanded grout does not contain sand and has a smooth texture. It is used for narrow grout lines, usually less than 1/8 inch wide. Unsanded grout is commonly used for wall tiles, bathroom tiles, shower walls, and delicate tiles such as marble or glass tiles.
Advantages of Unsanded Grout
Smooth finish
Best for narrow grout line
Good for wall tiles
Safe for glass and stone tiles
Easy to apply in small spaces
The main disadvantage is that unsanded grout may crack if used in wide grout lines, so it should only be used where grout spacing is small.
Sanded vs Unsanded Grout: Key Differences
The main difference between sanded and unsanded grout is strength and grout line width. Sanded grout is stronger and used for wider spaces, while unsanded grout is smoother and used for narrow spaces.
Main Differences
Sanded grout contains sand; unsanded grout does not
Sanded grout is used for wide grout line
Unsanded grout is used for narrow grout line
Sanded grout is stronger
Unsanded grout is smoother
Sanded grout is best for floors
Unsanded grout is best for walls
Where to Use Sanded Grout
You should use sanded grout in the following areas:
Floor tiles
Outdoor tiles
Hallway tiles
Kitchen floor
Large grout line tiles
High traffic areas
Because sanded grout is strong, it lasts longer in areas where people walk frequently.
Where to Use Unsanded Grout
Unsanded grout is best for:
Bathroom wall tiles
Shower wall tiles
Glass tiles
Marble tiles
Small grout line tiles
Vertical tile surfaces
Unsanded grout gives a smooth finish and is easier to apply on walls.
How to Choose Between Sanded and Unsanded Grout
Choosing between sanded vs unsanded grout depends mainly on grout line size and tile type. If your grout line is wide, use sanded grout. If your grout line is narrow, use unsanded grout. Also consider the tile surface because delicate tiles can get scratched by sanded grout.
Simple Rule
Grout line less than 1/8 inch → Use Unsanded Grout
Grout line more than 1/8 inch → Use Sanded Grout
This is the easiest way to choose the correct grout for your tile project.
Final Thoughts
Understanding sanded vs unsanded grout is important before starting any tile installation project. Sanded grout is strong and best for floor tiles and wide grout lines, while unsanded grout is smooth and best for wall tiles and narrow grout lines. Always choose grout based on tile spacing, tile type, and area where tiles are installed. Using the right grout will make your tiles stronger, cleaner, and longer lasting. Proper grout selection also helps maintain grout line strength and prevents cracks and damage over time.