{"id":964,"date":"1999-11-30T00:00:00","date_gmt":"1999-11-30T05:00:00","guid":{"rendered":"https:\/\/setsail.com\/?p=964"},"modified":"2015-10-16T12:14:12","modified_gmt":"2015-10-16T17:14:12","slug":"copper-shield-anti-fouling-on-aluminum","status":"publish","type":"post","link":"https:\/\/setsail.com\/copper-shield-anti-fouling-on-aluminum\/","title":{"rendered":"Copper Shield: Anti-Fouling on Aluminum?"},"content":{"rendered":"
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Dear Steve, I have bought Your Cruising Encyclopedia & Mariners Weather Handbook from Captain Watt’s in London. I can only say they are a great life work’s to make a boat owner’s life easier with the right kind of knowledge – thank you. Also I met the owners of Condor while they were in Sydney Australia a few years ago – Skip and his wife. What a lovely couple and boat they had built in NZ to your philosophy and design.<\/p>\n

I own a 50′ ex BOC open class yacht build in 1986 called Skoiern IV. She is built from aluminum. Because of the problems of toxicity today’s available anti-fouling are not effective without the tin content. I’m considering using a UK product called Copper Shield, using first a coating of epoxy as a primer to protect the hull, then apply the Copper Shield, which is a copper-rich anti-fouling that does not require redoing for ten years plus. My fear is the risk of using copper on an aluminum boat – is it safe? The company said yes it is. Since I would like to solve this problem once and for all, I’m inclined to try it. but I don’t want to find religion with a holy boat…I look forward to your comment, as I will need to redo the boat’s bottom soon. Kind Regards, and keep up the good work. – John <\/p>\n<\/div>\n

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Hi John: Copper bottom paint is OK as long as there is an intact barrier, made for the job. Many of the commercial boats in the States are using a system which includes a barrier coat which acts as an anode, so the anode coat is used before the aluminum, in the case of a bare spot.<\/p>\n

The main issue is to make sure the barrier coats are properly applied, are the correct thickness, and that the total paint system is from a single source with a history of this type of work – you do not want to be an experiment for them!<\/p>\n

And then, when the bottom paint is abraided, and bare aluminum shows, when you repair this, you have to be sure the build-up prior to copper-laced paint is done correctly.<\/p>\n

If you go this route let us know how it works out. – Steve<\/p>\n

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Dear Steve, I have bought Your Cruising Encyclopedia & Mariners Weather Handbook from Captain Watt’s in London. I can only …Read More<\/a><\/p>\n","protected":false},"author":3,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[17,10],"tags":[],"class_list":["post-964","post","type-post","status-publish","format-standard","hentry","category-yacht-construction-forum","category-tech-talk"],"_links":{"self":[{"href":"https:\/\/setsail.com\/wp-json\/wp\/v2\/posts\/964"}],"collection":[{"href":"https:\/\/setsail.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/setsail.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/setsail.com\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/setsail.com\/wp-json\/wp\/v2\/comments?post=964"}],"version-history":[{"count":1,"href":"https:\/\/setsail.com\/wp-json\/wp\/v2\/posts\/964\/revisions"}],"predecessor-version":[{"id":36465,"href":"https:\/\/setsail.com\/wp-json\/wp\/v2\/posts\/964\/revisions\/36465"}],"wp:attachment":[{"href":"https:\/\/setsail.com\/wp-json\/wp\/v2\/media?parent=964"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/setsail.com\/wp-json\/wp\/v2\/categories?post=964"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/setsail.com\/wp-json\/wp\/v2\/tags?post=964"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}