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post #1 of 3 Old 07-17-2012 Thread Starter
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More on Barrier Coating

I'm about to barrier coat the hull. My various bronze thru-hulls are currently installed and well-bedded, the seacocks are in good shape and depth tranducer yet to be installed.

So, should I:
1. remove all hull hardware, apply barrier coats then re-install and rebed that thru-hull hardware & transducer, or
2. first install the transducer with its offset foil and then just apply the barrier coats right over all that thru-hull and transducer hardware?

My gut says option 2 will further seal the thru-hull / hull mating surfaces, and covering the exposed bronze thru-hulls with epoxy also protects them from copper in the bottom paint that comes after the barrier coat. But I'd hate to waste all the time and money I've invested so far with an incorrect procedure.

Thanks Hank
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post #2 of 3 Old 07-17-2012
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Re: More on Barrier Coating

I have never seen anybody pull good through hulls to coat

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post #3 of 3 Old 07-18-2012
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Re: More on Barrier Coating

Never heard of anyone removing their thru-hulls due to barrier coating. You will most likely do more damage removing them, especially if they are bedded well with 5200.
I removed two transducers prior to barrier coating because I was changing out my instruments and the existing transducers were not compatible. It was a bear removing them and had to destroy each unit.

I would go with your option 2 but be sure to protect your depth transducer ceramic face with a good 3M tape as the epoxy barrier will damage the unit.


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