Answer
For concrete countertop polishing prep, wet sand from 120 or 220, then 400, 600, 800, 1000, and 2000.
Why it happens
Concrete needs controlled leveling and step-by-step refinement before a polished finish.
Recommended grit
Use 120 or 220 for light refinement, then 400, 600, 800, 1000, and 2000 for finer prep.
Wet or dry
Wet for dust control and fine finishing.
Success check
The countertop has an even refined surface before polishing or sealing.
What to do
- Clean the concrete surface.
- Use 120 or 220 only for light leveling.
- Refine through 400, 600, 800, and 1000.
- Use 2000 before final polish or sealer prep.
Avoid: Do not dry sand concrete without proper dust control.