Answer
For baseboards before painting, clean first, scuff with 180 or 220, then remove all dust.
Why it happens
Baseboards collect dust, gloss, scuffs, and old paint ridges that need cleaning and light sanding.
Recommended grit
Use 180 or 220 for scuff sanding. Use 320 for light smoothing between cured coats.
Wet or dry
Dry.
Success check
The baseboard is clean, dull, and smooth enough for paint.
What to do
- Clean dust and residue from the baseboard.
- Scuff the surface with 180 or 220.
- Use folded paper for grooves and tight edges.
- Remove dust before painting.
Avoid: Do not paint over dusty or glossy baseboards.