Unsanded Grout
Unsanded grout is a cement-based grout without sand that is designed specially to fill tile joints to create a smooth and fine finish. It uses a reduced aggregate formula to make a smooth grout mixture that can be spread and packed tightly into small spaces.
Unsanded grout is typically used for narrow joint grout applications to create a clean, precise, and refined look. Generally, it is used in tile installations where a joint width under ⅛ inch (3mm) is required. While it can be used in floor installations, it is especially suitable for wall grout applications and spaces that involve polished or delicate tiled surfaces.
Installations and Uses of Unsanded Grout
Whether an application needs unsanded grout or not depends on the surface sensitivity, joint size, and the need for a smooth finish. Major factors that must be considered while choosing unsanded grout include:
- Tight Joint Widths: Unsanded grout is best-suited for narrow joints, i.e., joints under 18/inch. In such cases, finer materials ensure that joints are filled properly without leaving any voids.
- Vertical Installations: Unsanded grout is often used in vertical installations, i.e., on walls, backsplashes, shower walls, and accent walls, where its smooth consistency creates visual appeal and allows for better control.
- Scratch-Sensitivity: As unsanded grout contains little to no abrasive materials, it is ideal for glass tiles, polished stone, and metal tiles.
- Clean Finish: It is a perfect choice for seamless and expansive walls.
- Crack Control: In narrow joints, unsanded grout is highly useful as it has a minimal shrinking ratio and thus can maintain the joint integrity for a long time.
- Consistency: Unsanded grout creates uniform joint lines with minimal texture variation, which allows for a seamless appearance.
- Small Spaces: It works well in the case of small tiles and can create tight joints even in difficult-to-reach spaces.
Unsanded grout is an ideal choice for narrow joints and delicate surfaces, where its smooth texture, crisp application, and safe composition allow for a clean and consistent finish.