I saw some questions on coppercoat. I will tell our experiences:
This spring we removed the off-factory antifouling and epoxy
primer. This took more than 12 man-days, and a lot of material, so better purchase
your boat naked underwater.
We then put on 3 layers of the solvent-free anti-osmosis epoxy
as recommended by the suppliers of coppercoat, called ME 100. This is a high-grade epoxy as used on drilling platform etc. Although it has probably very good anti-osmosis properties, I can not recommend this; probably due to it being solvent-free it gives a distinct orange peel effect making it impossible to sand the coppercoat afterwards. This might also reduce boat speed. If I did it again I would take a different anti-osmosis system.
Then we applied 4-5 layers of coppercoat, all in one day. This was a long day with 3 people, one just for mixing and distributing the stuff.
After a week of drying and hardening, we sanded the coppercoat using a rotating sander and velcro-backed scoring pads. These are of a scotch-brite like material: a sanding
foam from Metabo, 150 mm diameter. Using these soft pads instead of sanding
discs was necessary because of the orange peel.
I did not remove the white protection on the sugar scoops to apply under it, but if I did it again I would. Neither did I remove the rubber around the saildrive
Without these it already was a monster job.
Of course the light blue antifouling looks much better than the quickly discoloring coppercoat.
The boat was for 1.5 months on saltwater and then for 4 months on brackish water (the Baltic). Then salt
again, now on sweet water for the winter. After launching this spring and one month of salt water
we dried Miss Poes on sandy tidal water. There were no barnacles
, and light slime (green patches) on a few spots. Easily removed in 10 minutes with 10*20 cm pads.
One sail drive (untreated) was completely
covered with young barnacles
. The other saildrive
had one half completely covered with barnacles, the other side with green hairy algae. So the coppercoat obviously does a job.
After returning from the Baltic to the Wadden sea, we dried the ship again on tidal water. Removing the slime off the coppercoat took 1 hour for the two of us. Doing this each half year is recommended.
My conclusion is that for these cold waters here up north coppercoat is a good alternative for self-polishing antifouling. Less work; a high initial investment, a terrible job but no costs (antifouling and lifting) after that; environmentally much better.
I have been looking at the web a lot before deciding for coppercoat. There are very positive and very negative messages. Part of the messages (pro and con) are most probably put there by people who earn their money
by selling coppercoat or "normal" antifouling.
Additionally, I have had email
contact with a independent coppercoat user cruising the Caribbean
I have the impression that coppercoat is OK for colder waters, but might be inadequate for Caribbean
waters. As I understand all antifoulings are inadequate for the Caribs except for extremely poisonous stuff which is illegal in Europe
Seeing the amount of work it makes no sense to put on coppercoat if you keep the boat just a few years.
There are cheaper alternatives to coppercoat: there is another brand and some people mix copper powder and epoxy themselves. I have no idea on effectiveness and did not want to take a risk.