Bottom paint over 5200?

ereuter · #1 (**permalink**) 05-07-2007

I just replaced 4 of my thru-hulls and there is a bit of 5200 smeared on the hull around them. The hull has just been soda blasted, and is bare, so this 5200 is on the gelcoat.

I'm planning to use the Pettit sandless primer and then several layers of ablative paint.

Am I going to have trouble with the primer bonding to the 5200? Should I try to remove this excess somehow?

Thanks,
Eric

sailingdog · #2 (**permalink**) 05-07-2007

You should be able to paint over the 5200, but will have to wait until it has fully cured, which can take a fair amount of time. However, I think you would be better off removing the 5200 from the hull if possible. Not all paints are going to be compatible with 5200, which is polyureathane based. If you have any doubts, you should probably call the manufacturer and ask how it will do with 5200.

ereuter · #3 (**permalink**) 05-08-2007

I called Pettit, and the representative said "I have no idea. You'd have to ask 3M about that."

Great customer service.

Eric

sailingdog · #4 (**permalink**) 05-08-2007

Ereuter-

LOL... figures... Basically, 5200 is a polyureathane compound. If the solvents in the paint won't attack it... then the paint should be fine with it. However, the 5200 has to be completely cured, which can take a week or so from what I understand.

Just curious, who did the soda blasting on your boat?

ereuter · #5 (**permalink**) 05-08-2007

An outfit called "East Coast Soda Clean". They are on the north shore (of Boston) somewhere. $1200 for a Pearson 30. They did a nice job.

Eric