Before I apply the bottom paint???

[blacktip18]

The boat is a 1994 18ft fiberglass CC. Thus far I have finished sanding off several old coats of crappy bottom paint. The bottom of hull is now white gelcoat. I still need to wipe it down with a solvent. But before I apply my bottom paint (Sea Bowld coastal 45) do I need to apply anything else. Primer, Sealent, etc.? Will water penetrate the gelcoat after being paint? Thanks in advance.<br />B

 

[fishingdan]

Re: Before I apply the bottom paint???

You should use an epoxy based barrier coat/primer. This will seal the hull and provide an excellent base for the new botom paint. Every major paint manufacturer makes a barrier coat.

 

[surlyjoe]

Re: Before I apply the bottom paint???

also usually needs fiberglass wash primer before epoxy primer goes on, check the primer can to be sure.

 

[blacktip18]

Re: Before I apply the bottom paint???

Thanks for the response. I'll look into it.

 

[Rock Hall]

Re: Before I apply the bottom paint???

A boat dealer told me I can paint right over the old coat of bottom paint. Is this correct?

 

[brownies]

Re: Before I apply the bottom paint???

Rock, Yes, you can...sort of.<br /> You do need to sand it all smooth which will also clean and remove anything that's loose.<br /> This will make the new paint stick, and a smooth surface with new paint will look and last better than doing nothing but "washing and painting".<br /> Test a small place on the transom to be sure the new paint is compatible with whatever it's going to cover (the old paint) also.