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#1
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Coating a centreboard with fiberglass resin...
I am renovating a small sailboat (catboat type). I have to build a
centreboard for it so the plan is to shape a 3' X 1' X 3/4'' board and put a protective coating on it. Would marine quality paint good enough to provide a protective coating or should I really paint the thing and then apply resin on it? If resin is the only decent solution, is there a type that can simply be applied with a paint brush rather than having to deal with the fiberglass cloth and go through all the complicated process of applying it? Just for a contextual refernce this is just a tiny 11' sailboat which will be used primarily just to play around at our cabin when the wind picks up. Probably won't be in the water more than 10 times per summer. Andre |
#2
posted to rec.boats
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Coating a centreboard with fiberglass resin...
Melandre wrote:
I am renovating a small sailboat (catboat type). I have to build a centreboard for it so the plan is to shape a 3' X 1' X 3/4'' board and put a protective coating on it. Would marine quality paint good enough to provide a protective coating or should I really paint the thing and then apply resin on it? If resin is the only decent solution, is there a type that can simply be applied with a paint brush rather than having to deal with the fiberglass cloth and go through all the complicated process of applying it? Just for a contextual refernce this is just a tiny 11' sailboat which will be used primarily just to play around at our cabin when the wind picks up. Probably won't be in the water more than 10 times per summer. Andre Up to a certain point, CL boatworks always supplied marine grade plywood centerboards and rudders for it's CL16s & CL14s. My 1985 CL 14 rudder was in perfect shape when I sold it two years ago. The centerboard was de-laminated when I got the boat in 2000 because the previous owner kept it in the boat outside under a tarp for a number of years. The plywood, with a good coat of paint would be fine if you keep the centerboard indoors or in the garage/shed throughout the winter. |
#3
posted to rec.boats
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Coating a centreboard with fiberglass resin...
"Melandre" writes:
I am renovating a small sailboat (catboat type). I have to build a centreboard for it so the plan is to shape a 3' X 1' X 3/4'' board and put a protective coating on it. Would marine quality paint good enough to provide a protective coating or should I really paint the thing and then apply resin on it? If resin is the only decent solution, is there a type that can simply be applied with a paint brush rather than having to deal with the fiberglass cloth and go through all the complicated process of applying it? Just for a contextual refernce this is just a tiny 11' sailboat which will be used primarily just to play around at our cabin when the wind picks up. Probably won't be in the water more than 10 times per summer. Andre Given your contextual reference I would say that a well executed paint job using quality paint will work for you. There are some buts though. If there is a big difference in humidity between your workshop and where the board will live, and depending on the quality of the plywood used you may see some warping. Even several layers of quality paint is porous and will let water vapour in. Here is where epoxy really shines. Any *solvent free* epoxy (West, System Three, SP, non-name...) creates a much better barrier to water vapour than paint does. The deal with adding a light glass cloth is not so much about adding strength as making sure you get no spots with a too thin epoxy coverage. If all your glass is epoxy filled you know there is epoxy everywhere... My boat was built using epoxy for bonding, laminating and coating and it is now twenty years old and still going strong: http://hem.bredband.net/b262106/ -- Martin Schöön "Problems worthy of attack show their worth by hitting back." Piet Hein |
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