Sand Grout Guide: Types, Installation, and Care
A practical guide to sand grout: what it is, when to use it, installation steps, sealing, and maintenance for durable, clean tile joints.
Sand grout is a cementitious grout that uses sand as the aggregate, filling tile joints to add strength and texture.
What is sand grout and how it works
Sand grout is a cementitious mix that contains aggregate grains of sand embedded in cement paste. The sand gives the grout its characteristic texture and adds strength, especially in joints that are 1/8 inch or wider. For tiled floors and showers that endure foot traffic and water exposure, sanded grout resists hairline cracking better than very smooth mixes. When the grout cures, the cement binds the sand particles, forming a solid, water-shedding joint. In practice, sanded grout should be mixed with clean water and applied with a rubber float, forcing the mixture into joints and removing excess before final polishing. According to Grout Maintenance, the performance of sanded grout is tied to proper joint preparation and curing conditions. The choice of grout you use depends on the tile type, joint width, and environmental exposure.
- Common uses: floors, countertops, showers, and exterior tile work with wider joints
- Texture and grip: sanded grout creates a slightly rough surface that helps prevent slippage on floors
- Curing basics: keep joints from drying too quickly and avoid excessive water during cleanup
Got Questions?
What is sand grout?
Sand grout is a cementitious grout that uses sand as the aggregate, giving it a textured finish and extra durability for wider joints. It is especially suited for floors and wet areas where joints are not narrow. The sand adds strength and resistance to cracking when installed correctly.
Sand grout is a cement mixture with sand that fills tile joints, providing texture and strength for wider joints.
When should I use sanded grout?
Use sanded grout for joints wider than about 1/8 inch (3 mm) and in areas with foot traffic or moisture exposure, such as floors and showers. It’s not ideal for very narrow joints or delicate surfaces where scratching is a concern.
Use sanded grout for wider joints and high traffic areas, especially in moisture-prone spaces.
Can sanded grout be used on walls or backsplashes?
Sanded grout can be used on walls and backsplashes if the joints are wide enough and the tile surface is compatible. For very thin joints or polished surfaces, unsanded grout may be a better choice to prevent scratching.
It can be used on walls if joints are wide, but consider unsanded grout for delicate surfaces or very narrow joints.
Do I need to seal sanded grout after installation?
Sealing is generally recommended for cementitious sanded grout to reduce water absorption and staining. Follow the sealer’s instructions and allow full cure time before exposure to moisture.
Yes, sealing helps prevent stains and moisture from penetrating the grout after it cures.
What causes cracking in sanded grout and how to fix it?
Cracking is usually due to movement in the substrate, improper joint preparation, or rapid drying. Fixes range from cleaning and resealing to regrouting, depending on the crack size and location.
Cracking often comes from movement or improper prep; evaluate before deciding between resealing or regrouting.
Is sanded grout harder to clean than unsanded grout?
Sanded grout can be a bit rougher to clean due to its texture, but regular cleaning with a mild cleaner and proper sealing helps. Avoid harsh acids that can erode grout over time.
Sanded grout may require a bit more scrubbing, but sealing and regular cleaning keep it looking good.
The Essentials
- Choose sanded grout for joints wider than 1/8 inch
- Seal after curing to prevent staining and moisture intrusion
- Avoid sanded grout on very smooth surfaces and small joints
- Follow proper cleaning to prevent color changes and haze