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New boat - barrier coat or through hull first?

Old 03-01-2012, 08:51 AM
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Default New boat - barrier coat or through hull first?

As the title asks, I just closed on my new Gamefish and I'm pretty sure I'm going with a B164 type through hull transducer. Should I mount this first, before having the hull painted with epoxy barrier coats and ablative, the other way around, or does it not matter? Thanks.
Old 03-01-2012, 08:53 AM
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Barrier coat first then mount/seal, then bottom paint
Old 03-01-2012, 08:57 AM
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Originally Posted by jerseysportfisher View Post
Barrier coat first then mount/seal, then bottom paint
lol. That's probably the one option I can't do. I'm taking it to a shop that is going to paint the barrier coat and ablative while they have the boat.
Old 03-01-2012, 08:59 AM
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get some extra barrier coat. when you get the ducer cut the whole. Sand it good to get the bottom paint off. Paint it with barrier coat in and around. Mount and seal your ducer
Old 03-01-2012, 09:01 AM
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When I stripped my hull and removed my through hulls, I applied 4 to 5 coats of barrier coat to the hull, including up through the through hull openings, prior to replacing and sealing the through hulls, then bottom paint.
Old 03-01-2012, 09:04 AM
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What I can do is have the shop NOT put bottom paint on a 1 ft. x 1 ft. area where the transducer will be mounted. After installing it, I can bottom paint around it. Thanks.
Old 03-01-2012, 09:12 AM
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The best way to pop a hole through the hull is to drill a larger size than required, scoup out any internal coring, fill it with epoxy or resin, allow it to harden, then drill out the center to the correct size.

That way if / when the sealant fails, the coring and the hull won't be exposed to water ingress / damage.
Old 03-01-2012, 09:23 AM
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Do the whole coating before the ducer...When you cut the ducer hole, the lip of the ducer will cover any breaks in the coating...You will be using a sealant of sorts at the lip anyways.

Its just easier to paint first and drill 2nd. Dont have to worry about masking off anything

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