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Problem

What grit for removing boat bottom paint?

Boat bottom paint can be thick, dusty, and difficult to remove evenly.

paint wet sanding dry sanding between coats
Answer

For boat bottom paint removal, use 60 or 80, then 120 for smoother repaint prep with dust control.

Why it happens
Marine coatings need controlled removal and dust precautions before recoating.
Recommended grit
Use 60 or 80 for removal, then 120 for smoother repaint prep.
Wet or dry
Dry with dust control unless the coating system specifies wet sanding.
Success check
Old coating is reduced and the surface is ready for the next coating step.

What to do

  1. Use proper protection and dust control.
  2. Remove heavy coating with 60 or 80.
  3. Refine with 120 before repainting.
  4. Clean residue before applying new coating.
Avoid: Do not sand marine coatings without proper protection.

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