O C Diver
Guru
- Joined
- Dec 16, 2010
- Messages
- 12,891
- Location
- USA
- Vessel Name
- Slow Hand
- Vessel Make
- Cherubini Independence 45
Now that's just dumb. They have worked out a formula that works best and that's the amount of copper and other things they put in the paint. They don't "add more copper".
Copper is fairly expensive. 10 years ago when most paints had copper, you could buy the same manufacturer's paint with different levels of copper. The boat yard I use carried Rappahannock bottom paint. There were 2 or 3 choices of copper level. If you picked up the high level can, it weighed significantly more. There was so much copper in the top level that you could see streaks of copper after the paint dried on the hull. The high copper paint cost maybe 30% more, but it worked really well. EPA put them out of business.
Ted