Answer
For stone tile before sealer, test first and use 600 or 800 lightly only where sanding is needed.
Why it happens
Natural stone needs gentle fine prep and cleaning before sealer.
Recommended grit
Use 600 or 800 lightly for fine prep on suitable stone, then clean fully before sealer.
Wet or dry
Wet for stone dust control and smoother finishing.
Success check
The stone is clean, dry, and free of visible sanding scratches.
What to do
- Clean the stone tile.
- Test a hidden area first.
- Use 600 or 800 lightly only where sanding is needed.
- Clean slurry and let the stone dry before sealer.
Avoid: Do not use coarse grit on visible stone tile.