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Forum LockedAntifouling for aluminum saildrive

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captmatt View Drop Down
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    Posted: 08 Sep 2016 at 7:46pm
Looking for advice on antifouling for my aluminum Yanmar saildrive legs. Yanmar recommends an epoxy barrier coat and Trilux 33...so that's the easy part!

They also mention using Chlor-Rid to remove all "soluble salts" from the aluminum prior to the barrier coat. I will be doing quite a bit of sanding and removing of the old paint, but there is a lot of bare aluminum that has been exposed to saltwater. Is there a more readily available (Interlux?) product that will clean the units of salt? I understand that after cleaning to bare metal the barrier coat must be applied as soon as possible. Interlux literature points at a Viny-lux Primewash, but I can't find this product available anywhere. Has it been replaced by a different product?

Thanks!
Matt C.

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BoatNut View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote BoatNut Quote  Post ReplyReply Direct Link To This Post Posted: 11 Sep 2016 at 9:55pm
IMO the best prep for underwater aluminum is a light sandblast which will remove any soluable salts that a product like chlor-rid could hope to remove. It would also provide an excellent profile (abraded surface) for your barrier coat to adhere to, no other surface conversion or etching treatments would then be required like primewash which has been discontinued anyway.  For something as small as a saildrive a handheld blasting device loaded with crushed glass blast media would get your drive unit ready for Interprotect epoxy quite quickly.
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Joanna View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Joanna Quote  Post ReplyReply Direct Link To This Post Posted: 12 Jan 2017 at 2:01am
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