Answer
For painted siding, use 120 or 180 on peeling edges, then 220 for smoother repaint prep.
Why it happens
Exterior siding needs loose paint removed, edges feathered, and sound paint scuffed.
Recommended grit
Use 120 or 180 on peeling edges, then 220 for smoother repaint prep.
Wet or dry
Dry.
Success check
The siding is clean, dull, and free of loose edges.
What to do
- Clean and dry the siding.
- Remove loose paint.
- Feather peeling edges with 120 or 180.
- Use 220 on smoother repaint areas.
Avoid: Do not repaint over loose paint or chalky residue.