Kevin,
You pose a valid question with "What's the purpose of paying to epoxy-barrier-coat a lead keel?
A barrier coat is to prevent blisters from forming on a polyester-fiberglas hull."
But I would note that Mars Keel, the current manufacturer of lead keels for Catalina Yachts, does coat their new and repaired keels with Interprotect 2000E before palletizing and shipping.
Perhaps this is due to the fact that lead will oxidize very quickly without some sort of protection and an epoxy barrier coat sure qualifies as a good protective coat.
I've personally seen this kind of oxidation and it happens very, very quickly. There is a mild coating of oxidation after only one hour and it gets heavier as more time passes.
I personally didn't mind grinding the exposed parts and immediately coating them with an epoxy barrier coating to protect it. I honestly can't think of a paint coating I would have substituted, but even though my boat is done and re-launched at this point, I'd be interested in knowing if there were an equivalent or better coating.
You pose a valid question with "What's the purpose of paying to epoxy-barrier-coat a lead keel?
A barrier coat is to prevent blisters from forming on a polyester-fiberglas hull."
But I would note that Mars Keel, the current manufacturer of lead keels for Catalina Yachts, does coat their new and repaired keels with Interprotect 2000E before palletizing and shipping.
Perhaps this is due to the fact that lead will oxidize very quickly without some sort of protection and an epoxy barrier coat sure qualifies as a good protective coat.
I've personally seen this kind of oxidation and it happens very, very quickly. There is a mild coating of oxidation after only one hour and it gets heavier as more time passes.
I personally didn't mind grinding the exposed parts and immediately coating them with an epoxy barrier coating to protect it. I honestly can't think of a paint coating I would have substituted, but even though my boat is done and re-launched at this point, I'd be interested in knowing if there were an equivalent or better coating.