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The propeller needs attention too. You can simply polish it. Apparently, if it contains enough copper and has a mirror finish, barnacles can’t attach. Another option is propeller antifouling, available as brush-on paint or aerosol. I decided to try something a little different: Hempel Silic One Proppeler Kit.
How it went:
1. 23 February. Removed the sacrificial anode.
2. 23 February. Began stripping back to bare metal. While sanding the hull I did the blades with the same 80-grit paper.
3. 2 March. Used the belt sander with 60-grit paper in the narrow spaces between the blades.
4. 23 March. On the day I applied the primer, I went over all the metal again with 40-grit paper.
5. 23 March. Cleaned the propeller with Hempel Pre-Clean, just as before polishing and priming.
6. 23 March. Mixed half the two-component Hempel Light Primer and brushed it onto the dry propeller. At 10°C, leave at least eight hours.
7. 29 March. A week later, before painting the hull I mixed the remainder and applied a second epoxy-primer coat.
8. 29 March. About five hours had passed by the time I finished the first hull antifouling coat. Time for Hempel Silic One Tiecoat, which needs sixteen hours to cure. Home for the night.
9. 30 March. First, the second hull antifouling coat, finishing that job. By then, the tiecoat had dried at least eighteen hours. I carefully brushed on the final Hempel Silic One coat. It needs at least a day and a half before immersion, but no more than a month.
10. 5 April. Used a flat screwdriver and a narrow strip of 80-grit paper to clean dried paint drops off the shaft, then refitted the anode.
Four coats, four brushes. The manufacturer says Silic One lasts two years; after that, I should only need to wash it and apply another topcoat. We’ll see.
#maintenance
How it went:
1. 23 February. Removed the sacrificial anode.
2. 23 February. Began stripping back to bare metal. While sanding the hull I did the blades with the same 80-grit paper.
3. 2 March. Used the belt sander with 60-grit paper in the narrow spaces between the blades.
4. 23 March. On the day I applied the primer, I went over all the metal again with 40-grit paper.
5. 23 March. Cleaned the propeller with Hempel Pre-Clean, just as before polishing and priming.
6. 23 March. Mixed half the two-component Hempel Light Primer and brushed it onto the dry propeller. At 10°C, leave at least eight hours.
7. 29 March. A week later, before painting the hull I mixed the remainder and applied a second epoxy-primer coat.
8. 29 March. About five hours had passed by the time I finished the first hull antifouling coat. Time for Hempel Silic One Tiecoat, which needs sixteen hours to cure. Home for the night.
9. 30 March. First, the second hull antifouling coat, finishing that job. By then, the tiecoat had dried at least eighteen hours. I carefully brushed on the final Hempel Silic One coat. It needs at least a day and a half before immersion, but no more than a month.
10. 5 April. Used a flat screwdriver and a narrow strip of 80-grit paper to clean dried paint drops off the shaft, then refitted the anode.
Four coats, four brushes. The manufacturer says Silic One lasts two years; after that, I should only need to wash it and apply another topcoat. We’ll see.
#maintenance
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