Join Date: Mar 2002
Location: Cornwall, UK
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Originally Posted by jameswilson29
Did you prime the propeller
or put the zinc paint
directly on the bare metal?
I have just been reading all the tech specs, and it has to go on bare metal - no primer - but two coats. The second coat when the first is touch dry.
"Zinc Coat Barnacle Barrier 1792 provides easy to use aerosol spray protection for bare metals including steel, stainless steel, cast iron, copper, bronze, galvanized steel, and lead. It forms an excellent bond to underwater metals and running gear, and inhibits corrosion on these surfaces. Zinc Coat Barnacle Barrier’s smooth, hard surface will self-clean in service, and can be used above or below the waterline. The dried film of Zinc Coat contains 93% pure zinc. Not for use on aluminum surfaces."
I have located a similar product in the UK - Zingaspray. http://www.zinga-uk.com/how.html
"• In some marine environments barnacles do not like the taste of zinc and many other forms of marine life do not like adhering to the Zinga surface because of the low current passing between the zinc and the substrate."
I have tried -
bare polished prop - growth after a few months.
hard anti-fouling - reasonable result until it started to flake off.
I think I will be giving Zingaspray a go this coming season.