Grout might seem like a finishing touch, but it plays a major role in how your tiles look, feel and last. From keeping moisture out to defining the style of your room, choosing the right type of grout is one of the most important steps in any tiling job.
In this guide, we’ll explore the main types of grout, where to use each one, and how to make sure your tiles stay looking their best for years to come.
What Is Grout and Why Does It Matter?
Grout is a blend of cement, water and sometimes additives that fills the gaps between tiles. It seals joints, prevents dirt and moisture from getting underneath, and helps keep tiles aligned. The type of grout you choose affects not only the strength and water resistance of your tiled surface but also its overall appearance.
The Main Types of Grout
1. Cementitious Grout
The most common option for both professionals and DIYers, cementitious grout is made from Portland cement and water. It’s available in two main varieties:
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Sanded grout – Contains fine sand particles that make it more durable and less prone to cracking.
Best for: floor tiles, wide joints (over 3 mm), and areas that experience frequent traffic. -
Unsanded grout – Smooth in texture and ideal for narrow joints (under 3 mm).
Best for: wall tiles, delicate surfaces like glass or polished stone where sand could cause scratches.
Cementitious grout is affordable and easy to work with, but it’s porous—so it should be sealed after installation to prevent staining and moisture absorption.
2. Epoxy Grout
Epoxy grout is made from epoxy resins and a filler powder, giving it superior strength and water resistance. It’s highly durable, stain-proof and doesn’t require sealing, making it a favourite for professional installers.
Best for: bathrooms, wet rooms, kitchens, and commercial areas where hygiene and easy cleaning are key.
While epoxy grout is more expensive and can be trickier to apply, its long-term benefits often justify the cost—especially in wet or high-traffic spaces.
3. Furan Grout
Less common in domestic settings, furan grout is a resin-based product designed for environments exposed to strong chemicals or extreme temperatures.
Best for: industrial kitchens, laboratories, and factories. It’s durable but difficult to install, so it’s typically used by professionals in specialist applications.
4. Urethane and Hybrid Grouts
A newer option on the market, urethane or pre-mixed hybrid grouts combine the convenience of pre-mixed formulas with improved flexibility and stain resistance. They don’t require sealing and are ready to use straight from the tub.
Best for: DIY projects, splashbacks, and areas that benefit from easy maintenance.
Choosing the Right Grout for Your Project
When selecting grout, think about:
- Joint width – Wider joints generally need sanded grout for added stability.
- Tile type – Use unsanded grout on soft or polished materials to prevent scratching.
- Location – Bathrooms, kitchens and outdoor areas benefit from waterproof or epoxy grout.
- Colour – Choose a tone that complements or contrasts your tiles. Light grout shows dirt more easily; darker grout can define patterns.
- Maintenance – Some types (like cementitious) require sealing; others (like epoxy) are low-maintenance.
Tips for Working with Grout
- Always mix according to the manufacturer’s instructions.
- Work in small areas to prevent premature drying.
- Wipe away excess grout before it hardens.
- Allow full curing before sealing or exposing to moisture.
- Use matching or colour-coordinated sealant to complete the look.
Final Thoughts
Understanding the different types of grout helps you choose the best option for your space. Whether you’re refreshing a bathroom floor or tiling a kitchen splashback, the right grout will ensure your tiles stay strong, beautiful and easy to clean for years to come.
If you’re unsure or want a professional finish, use TrustATrader to find a trusted tiler near you. Every trader on our platform is vetted, reviewed and committed to delivering quality workmanship you can rely on.