Antifouling Prop & Shaft

[Foolishness323]

I just finished scraping and sanding a season''s worth of barnacles off the bronze propeller and shaft on my boat. Any advice on antifouling coatings for a prop/shaft. I know most antifouling paints are a no-no on bronze. The few paints I''ve seen made specifically for props or drive shafts are for aluminum and I''m not sure if they are appropriate for bronze.

[clayton]

I''ve used Pettit Antifouling Blue, (with copper), on my bronze prop and ss shaft for years. I''ve not noticed any damage from electrolysis.

Anybody else out there with a comment?

[bbracken]

more than a year ago the sailnet website recommended a barrier coat on my prop and shaft before applying anti fouling paint. Of course I leave untreated space for the zinc. I have had much better success than without the barrier coat. No damage either.

[nauticalrich]

Are you guys saying that some paints can cause damage? If so what paint should you not use?

Of course I am aware that you do not paint the surface where the zincs are attached.

[GordMay]

Copper based paints cause damage.