If you’re planning a tile project, one of the most common questions is: sanded and unsanded grout — which one should you use?
I’m Jack Martin, and I’ve tested both types in real home renovation projects, including bathrooms, kitchen backsplashes, and shower walls. In this guide, I’ll walk you through the difference between sanded and unsanded grout in simple, easy-to-understand terms. No confusing jargon—just clear, practical advice based on real experience.
What is Grout and Why is it Important?
Grout is an important aspect of any tiling project. It is a mix, typically consisting of water, cement, and sand at times. The combination will then form a paste that hardens upon drying and fills the spaces in between the tiles to bind them together. Apart from its useful feature, grout also influences the appearance of the finished tiling surface, making it even smoother and cleaner-looking.
Without grout, tiles may shift, water penetrates in all the wrong places, and dust deposits where it’s least wanted. Grout also strengthens the load-bearing surface of tiled areas because it distributes weight and pressure evenly. Since this is such a vital component, making the right choice of the sanded or unsanded type requires some knowledge of what each does.
What is Sanded Grout?
Sanded grout-This grout contains small particles of sand and has them mixed with cement, so it is tough and long-lasting. With the presence of the sand inside, this grout will feel rough, which is suitable for big areas and when it needs to put up with some difficult uses.
Key Features of Sanded Grout
Durability and Strength: Mixing in sand makes sanded grout much more robust than unsanded. This extra strength helps make it able to support heavy foot traffic, making it suitable for flooring applications. Wider Joint
Applications: Sanded grout is manufactured for applications with joints larger than 1/8 inch in size. The sand fills in the space and stops the grout from shrinking as it dries to keep it firmly in its place.
Cheap and Easy to Find: Sanded grout is cheaper than unsanded grout, so most people use it for large projects.
When to Use Sanded Grout
Sanded grout is ideal for applications where strength and durability are required. For example, it is the best suited for tiled floors where the grout has to withstand heavy weight and movement. It is also ideal for outdoor applications such as patios and walkways. It is ideal for tiles with wide spacing because of its rough texture, it fills bigger spaces without sagging or cracking over time.
Unsanded grout refers to the other name of non-sanded grout, which is a smooth mixture that is made without any sand. The unsanded grout is mainly applied on tiny gaps and for delicate tiles. Its creaminess is very effective in giving a smooth effect on the vertical surfaces and is primarily applied on walls and grout backsplashes. This makes it quite popular as a grouting material for those surfaces.
Smooth Finish: This grout is quite sleek and refined without the sand. It’s very good for decorative and detailed tiling work.
Best for Narrow Joints: Unsanded grout is meant for joints less than 1/8 inch. Its smooth finish helps it fit into small spaces well.
Safe for Delicate Tile: Without any rough sand, it’s safe to use with delicate materials like glass, marble, and polished stones.
When to Use Unsanded Grout
Unsanded grout is the best choice for vertical surfaces, such as shower walls, bathroom backsplashes, and kitchen tiles. It sticks perfectly to surfaces without drooping, even when used in thin layers. It also does excellent work on tile details, where small gaps require smooth and careful application. Using unsanded grout also helps avoid scratching soft or shiny tiles.
Sanded vs. Unsanded Grout: Major Differences
Understanding the Difference Between Sanded and Unsanded Grout is key to making the right choice for your project.
Composition and Texture
Sanded grout contains fine sand particles, making it rough and stronger.
Unsanded grout is smooth and creamy, providing a refined finish.
Joint Width
Sanded grout is suitable for joints larger than 1/8 inch, as the sand helps fill bigger spaces without drooping.
Unsanded grout is ideal for joints less than 1/8 inch, ensuring a clean and precise finish.
Durability
Sanded grout is more durable and best for high-traffic areas and tough applications.
Unsanded grout is less durable but perfect for delicate tiling work where precision is key.
Choosing Between Sanded and Unsanded Grout
Selecting the right grout depends on several factors:
Tile Material: For soft, shiny, or delicate tiles, unsanded grout is the better option to prevent scratches.
Joint Size: Measure the spaces between your tiles. Sanded grout is ideal for wider joints, like a 1/8 grout line while unsanded grout is best for narrow ones.
Application Area: Floors and high-traffic areas benefit from strong sanded grout, while walls, backsplashes, and intricate designs are better suited for unsanded grout.
Tips for Grout Maintenance
In whichever type of grout you select, proper grout care is necessary to make it survive longer and maintain its appearance Sealing:
Always apply a sealant to your grout to protect it against stains, water damage and mildew.
Regular Cleaning: Clean the grout lines using a gentle cleaner and a soft brush to prevent dirt from piling up in them.
Avoid Harsh Chemicals: Harsh cleansers weaken grout over time. Use products that are grout-friendly.
Conclusion
Choosing between sanded grout and unsanded grout doesn’t have to be complicated. It’s not about which one is better overall — it’s about which one is right for your specific project.
From my hands-on testing:
- For floors and durability → Sanded grout
- For walls and delicate tiles → Unsanded grout
Always measure your grout lines, check tile material, and follow manufacturer instructions.
If you choose correctly, your tile work will look clean, professional, and last for years.
Grout Calculator: Estimate Exactly How Much Grout You Need
Once you’ve chosen between sanded and unsanded grout, the next step is calculating how much grout your project requires. Use our free Grout Calculator to estimate the exact grout quantity based on your tile size, grout joint width, and installation area. Getting an accurate estimate helps you avoid wasting materials, reduce costs, and ensure you have enough grout to complete your tile project.
Frequently Asked Questions (FAQs)
1. What is sanded grout used for?
Sanded grout is mainly used for floor tiles and grout lines wider than 1/8 inch because it is stronger and resists cracking.
2. What is the difference between sanded and unsanded grout?
The main difference between sanded and unsanded grout is that sanded grout contains sand for extra strength, while unsanded grout has a smooth texture and is better for small grout lines.
3. Sanded vs non sanded grout — which is better?
Neither is universally better. It depends on your tile type and grout width.
4. Should I use sanded or unsanded grout for showers?
Use unsanded grout for shower walls and sanded grout for shower floors.
5. Can sanded grout scratch tiles?
Yes, it can scratch delicate surfaces like marble or glass tiles.
6. Can I use unsanded grout on floors?
You can, but only if grout lines are very small. It may crack in wider joints.
7. Is sanded grout more waterproof?
No cement-based grout is fully waterproof. Both types should be sealed properly