Hull has been soda blasted, to barrier or not?

[Joe Myerson]

GrFa,

Dean is right; Ken knows his stuff.

Onto my own tale of (sort of) woe.

When I bought my boat, she had many layers of non-ablative paint built up on the bottom. The surveyor had recommended a barrier coat. The yard said I could continue applying layers of paint or, if I wanted, they'd strip off the old stuff and apply barrier coat.

I told them to go ahead with the barrier coating.

At the end of the following season, the boat had developed blisters that were so small that I might not have noticed them, although the yard did and sheepishly pointed them out to me. Turns out the boat had been kept in the water year-round on the Gulf of Mexico at some time in its past.

This time I had the boat blasted in the fall and faired and coated with a poly barrier coat the following spring. She's been smooth ever since. (The yard removed the old coat at their expense, but it was my decision to have the hull faired and recoated.)

At the end of the day, I'd recommend putting on the barrier coat--but just make sure the hull is totally dry.

Good luck,

--Joe

[Oswego John]

This time I had the boat blasted in the fall and faired and coated with a poly barrier coat the following spring. She's been smooth ever since.

Joe,

Just my opinion but the key word to your message is *POLY* barrier coat.

Think spring,
O J

[M. R. Bober]

... What we can see now that the boat is stripped is a greenish colored fairing compound which was under the bottom paint...

I have seen this "greenish fairing" on several CDs. I wonder if they used it as a part of the construction/preparation process?

Mitchell Bober
Sunny Lancaster (not to be confused with the home of the Amish), VA

[Joe Myerson]

OJ:

You're right. If I remember correctly, they applied a polyester barrier coat (I might have it wrong, but it was not the standard barrier coat).

--Joe