Hello,
Prior to this season, I worked on the bottom of my Catalina 30. I had the bottom soda blasted, I made some minor epoxy repairs, I sanded and fared it as well, I then applied two coats of epoxy barrier (Pettit Protect Epoxy Primer 4700), and two coats of bottom paint (Pettit Hydrocoat Antifouling Bottom Paint). After the season I had the boat hauled and pressure washed and placed on stands. While cleaning the scum line I noticed the bottom paint looks like it failed along the scum line. I am not exactly sure why or what I should do to fix it.
I suspect that the barrier coat may have dried too much before applying the bottom paint. I applied the bottom paint within the time limit of applying the epoxy barrier for the given temperature, but the epoxy was not tacky to the touch, which is what I read was best for other bottom paint applications. i.e. Tacky to the touch, but no paint on your finger. Maybe it dried out on me by the time I got to that side of the boat or the scum line. I gave the scum line four coats of bottom paint.
What can I do to fix it? Do I have to sand the scum line and reapply epoxy barrier, then apply additional bottom paint? Or could I just spot prep it?
Prior to this season, I worked on the bottom of my Catalina 30. I had the bottom soda blasted, I made some minor epoxy repairs, I sanded and fared it as well, I then applied two coats of epoxy barrier (Pettit Protect Epoxy Primer 4700), and two coats of bottom paint (Pettit Hydrocoat Antifouling Bottom Paint). After the season I had the boat hauled and pressure washed and placed on stands. While cleaning the scum line I noticed the bottom paint looks like it failed along the scum line. I am not exactly sure why or what I should do to fix it.
I suspect that the barrier coat may have dried too much before applying the bottom paint. I applied the bottom paint within the time limit of applying the epoxy barrier for the given temperature, but the epoxy was not tacky to the touch, which is what I read was best for other bottom paint applications. i.e. Tacky to the touch, but no paint on your finger. Maybe it dried out on me by the time I got to that side of the boat or the scum line. I gave the scum line four coats of bottom paint.
What can I do to fix it? Do I have to sand the scum line and reapply epoxy barrier, then apply additional bottom paint? Or could I just spot prep it?