What Is a Grout Float?
A grout float is a handheld tool used to apply and pack grout into the joints between tiles. Grout floats typically have a flat rectangular base (usually rubber or foam) with a rigid backing plate and a handle on top for grip and pressure.
How a Grout Float Works
1. Spreads grout You scoop grout and push it across the tile surface.
2. Packs joints The rubber face forces grout deep into the gaps between tiles.
3. Removes excess Held at an angle, it scrapes off extra grout from the tile face.
How to Choose a Grout Float
Standard rubber float
- Most common
- Used for cement-based grout
- Good for typical DIY tile jobs
Epoxy float (harder rubber)
- Stiffer, less flexible
- Used for epoxy grout (thicker, stickier material)
Urethane float (softer)
- More flexible, smoother finish
- Good for delicate tile or polished stone
Technique Tips
- Hold at 45° angle to pack joints
- Move diagonally across tile lines — this prevents pulling grout out of the joints
- Finish with the float at a steeper angle to clean off excess
Recommendations
Best Overall: QLT by Marshalltown 9.5-in x 4-in Rubber Grout Float — The standard choice for most DIY tile jobs. Works with ceramic, porcelain, floors, backsplashes, and showers. Compatible with sanded or unsanded grout.
For Epoxy Grout: QLT by Marshalltown 9.5-in x 4-in Epoxy Grout Float — Stiffer construction handles the thick, sticky nature of epoxy grout. Packs joints more cleanly and is easier to wipe off tile than a soft float.
For Textured Tile and Stone: Troxell USA 4" x 9" Urethane Grout Float — The softer, more flexible edge won't dig grout out of joints on rough surfaces like slate, travertine, or uneven stone. Leaves tile cleaner when working with textured materials.