Join Date: Apr 2002
Location: Long Island NY
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more info on spray-on barnacle prevention for prop shafts
The product that I was told about is Pettit's Zinc Coat Barnacle Barrier.
Product description from one retailer's web site:
Pettit Zinc Coat Barnacle Barrier 1792 is specifically designed to be used on bare metals such as steel, stainless steel, cast iron, copper, bronze, galvanized steel and lead, both above or below the waterline. Zinc Coat forms an excellent adhesive bond to underwater metals and running gear and inhibits corrosion on these surfaces. Properly applied, Pettit Zinc Coat Barnacle Barrier yields a smooth, hard surface that self-cleans under way.
Price for a 16-oz spray can is about $22.
Edit: I just saw the previous post reporting negative results for this product. But the guy in my boatyard had a clean shaft at haul out and mine is a mess, and we were both in the same harbor all season.
Fluctuat nec mergitur
Last edited by pegasus1457; 11-17-2009 at 03:08 PM.