Answer
Do not sand polished granite for cleaning. For repair testing, use 1000 or finer wet in a hidden spot.
Why it happens
Polished granite requires specialty finishing; normal sandpaper can leave a mismatched dull area.
Recommended grit
Avoid sanding polished granite for cleaning. For small repair testing, use 1000 or finer wet.
Wet or dry
Wet.
Success check
The test area does not show a new dull patch or deep scratch pattern.
What to do
- Clean the granite first.
- Avoid sanding polished granite for normal cleaning.
- Test 1000 or finer wet in a hidden spot.
- Stop if the finish turns uneven.
Avoid: Do not use coarse grit on polished granite.