Notice:
The advice given on this site is based upon individual or quoted experience, yours may differ.
The Officers, Staff and members of this site only provide information based upon the concept that anyone utilizing this information does so at their own risk and holds harmless all contributors to this site.
So, how much paint is required to paint the bottom of a Catalina 25? What can I expect to spend on the paint alone if I intend to paint the bottom myself?
2.) Depends on which paint you use, and where you get it.
I just paid $200/gal at a local marina for Micron Extra. If you're thinking about having it shipped, be sure you understand the additional shipping costs.
If you look around you may be able to find Micron Extra on sale someplace. Locally, we have a West Marine outlet and I was able to find all of the "stuff" that I needed and it was on sale. For example, I got the Extra for $180. per gallon. Of course I refinishing the entire below-waterline portion of the hull, so he may have given me a break of the materials. The only problem that I had was getting the boat off the ground high enough to paint the upper portion of the swing keel.
I used Micron Extra for a few years with good results but when I was ready to repaint the second time the fellows at the yard were noticing that they were having adhesion problems. Perhaps it was just a bad batch. But I thought I'd test the waters and tried West's CPP. At $ 99.00 I felt I was getting a gift when compared to what Micron was asking. I was surprised to see that I'll get a fourth year out of this application. Micron never lasted beyond the third year before the signal coat started to show. As I recall it took a gallon and a half to do the job. Had a heck of a job stirring the paint...lots of copper. Used a 1/2" drill to do the job.
I'm liking the Interlux "ACT Fiberglass Bottomkote"... it's an ablative paint (no build-up), lots cheaper than the Micron series and after a 9 month soak, seems to be holding up just as well. Note that Interlux also makes a non ablative 'Fiberglass Bottomkote' (Doesn't have ACT in the name).
Other tidbits of advice:
Whatever paint you get, make sure you buy the appropriate solvent (thinner) to go with it. Every bottom paint I've used needed some periodic 'cutting' to maintain a good flow. This stuff gets real thick and skins up quickly as it's exposed to air.
It takes a lot of effort to get the solids thoroughly mixed into the paint. Don't scrimp on this step. I usually use a seperate bucket to help in the mixing process.
If you brush on, buy at least a 'medium grade' brush. I've found the cheap 'fooler' series 'chip' brushes live up to their name. You'll spend most of your time fooling around picking out bristles from the paint.
Protective gloves and plenty of ventilation are a must. The solvents used in these paints are pretty 'nasty'.
For Bottom Pro Plus (W. Marine), takes me ~5 qt. to do bottom including rudder (fin keel) with one coat using roller. Cost is probably around $120-130 total for paint.
I used West Marines cheapest at $45 a gallon on sale. Poured in 1 container of cayen pepper and painted the boton. 1 gallon did more than enough. Yes the cayen works. If anyone doubts it they can drop by the boat for a look.
Notice: The advice given on this site is based upon individual or quoted experience, yours may differ. The Officers, Staff and members of this site only provide information based upon the concept that anyone utilizing this information does so at their own risk and holds harmless all contributors to this site.