Bottom Paint Questions

[Macncheez]

Well the paint came from a naval yard so ill never really know. So going to scrape and sand the entirety of the boat bottom and start new. Might get more paint just to ensure I can coat it enough. But thanks for the location and tips.

[onestepcsy37]

Originally Posted by fstbttms

Trinidad is the best anti fouling paint available, IMHO. However Pettit has reduced the copper content in both the Trinidad SR and Trinidad Pro (identical products, BTW) to 60%. They now process the copper differently than in the past, making less copper work more effectively.

i notice that you're in california. i wonder if pettit sells a different formulation under the same name in your state because of environmental laws. i just did my bottom in may of this year and the trinidad professional in red was 75% copper.

macncheese - you may find that two gallons cost about the same as one gallon and two quarts. check the quart/gallon prices before you buy. and i really don't think you'll need more than two gallons. after applying two coats use the remainder to put extra paint on the leading edges, the bottom of the keel (you may run aground and scrape some off) and all around the waterline for up to maybe a foot down. and don't forget to save some to do the parts you can't get to until the boat is put in the slings.

[fstbttms]

Originally Posted by onestepcsy37

i notice that you're in california. i wonder if pettit sells a different formulation under the same name in your state because of environmental laws. i just did my bottom in may of this year and the trinidad professional in red was 75% copper.

There are no restrictions on anti fouling paint copper content in California. Trinidad Pro is Trinidad Pro regardless of where it is sold in the country.

Trinidad Pro
TECHNICAL BULLETIN TB923

ACTIVE INGREDIENTS:
Cuprous Oxide 60%

http://www.pettitpaint.com/fileshare...inidad-Pro.pdf

[onestepcsy37]

Originally Posted by fstbttms

There are no restrictions on anti fouling paint copper content in California. Trinidad Pro is Trinidad Pro regardless of where it is sold in the country.

Trinidad Pro
TECHNICAL BULLETIN TB923

ACTIVE INGREDIENTS:
Cuprous Oxide 60%

http://www.pettitpaint.com/fileshare...inidad-Pro.pdf

i'm shocked. SHOCKED I TELL YOU!

after reading fstbtms post that pettit has reduced the copper content in trinidad i had to find out for myself. just last may i bought trinidad pro in red with 75% copper. so i went back to the store where i bought it.

it's true. the newest formulations are much reduced. jack, the ornery owner of the store, told me he can't get the 'old' formula anymore. just to check on him, i went through his stock and sure enough found one 'old' can left and compared it with one 'new' can. it was the blue color which used to be 65% copper and is now 56% copper. red is no longer the highest copper content color - it's blue, with 65% copper. damned if i'm going to paint my bottom blue!!!

pictures show jack's current crop of pettit pro. on the left of the 'group' picture are two cans of blue; one is 'old' and one is 'new'. the other picture shows the different copper percentages of what appears to be the same paint.

glad i did the bottom this year. hopefully i won't have to concern myself with this for the next four years or so...

[fstbttms]

Well, again, I find no difference in anti fouling performance between the old Trinidad and the new.

[onestepcsy37]

by the way, i said in my last post that the highest copper content color of trinidad pro was blue, with 65% copper.

that was incorrect. it is 'light blue'. the regular blue has 56%, as reported in the rest of my post.

my apologies if you ran out and bought a case of blue....

[Macncheez]

No, not yet thanks a nautical ton. I would rather have red....but for the % I my go with another color. If I didn't find this site and the good people on here I'd be lost purchasing more then I need and wrong contents . Just to let you know you probably saved me 3-400 dollars and hours of work.

[ontherocks83]

I was just checking out Petit's website and have some questions. The product data sheet says it can be launched up to 60 days after applying. Does this mean that if your boat is in New England and comes out for 5 months every year that it will not be good come spring time?

The product looks really good and obviously I trust your opinions, I'm just not sure if I am interpreting that correctly. Can you leave your boat on the hard for 5 months between seasons with out having to reapply the paint?

[Cheechako]

One gallon should do on that boat. Leave that "submarine paint" on there! ... at least under your new coat. 39% isnt very high copper content. 50%+ would be nice if they still sell it.
You may find that the old paint you have is better than anything you are putting on. Are you getting alot of growth?

[onestepcsy37]

Originally Posted by ontherocks83

I was just checking out Petit's website and have some questions. The product data sheet says it can be launched up to 60 days after applying. Does this mean that if your boat is in New England and comes out for 5 months every year that it will not be good come spring time?

The product looks really good and obviously I trust your opinions, I'm just not sure if I am interpreting that correctly. Can you leave your boat on the hard for 5 months between seasons with out having to reapply the paint?

iirc, after you put in your newly painted boat, you can take it out for up to 30 days, after which the paint turns into a pumpkin or something. but some boatyard people have said if you just give it a light sanding it should be good to go again.

for a really good opinion, you may want to go on the pettit website and ask that question..... (and please let us know what they say).

[gradstudent]

Ive tried them all and my best results are as follows, prep hull as you would with any boat, i bring mine to the barrier coat I applied when new. mix slow epoxy with 8 lbs per gal of cuprous oxide. let cure. scuff surface to expose copper. launch, I am going on 6 years in FL

[fstbttms]

Originally Posted by onestepcsy37

for a really good opinion, you may want to go on the pettit website and ask that question..... (and please let us know what they say).

Pretty sure they will tell you to follow the directions on the can or web site. No way they would advise otherwise.

[roverhi]

Originally Posted by ontherocks83

I was just checking out Petit's website and have some questions. The product data sheet says it can be launched up to 60 days after applying. Does this mean that if your boat is in New England and comes out for 5 months every year that it will not be good come spring time?

The product looks really good and obviously I trust your opinions, I'm just not sure if I am interpreting that correctly. Can you leave your boat on the hard for 5 months between seasons with out having to reapply the paint?

Ablative paints are usually no problem to keep out of the water. It's the hard paints that have issues. I'd check with Pettit but Interlux Micron Extra ablative paint did just fine on my boat after a 3 month haul out.