Paint for steel keel

[graham]

every year or two I lift the boat up and lower the lifting keel to wire brush the steel part of the lifting keel and paint it with metal primer.

The bottom part of the keel is a cast iron lump of ballast which remains outside the boat This is attatched to the end of the plate which is an inch thick mild steel plate which goes up into the case when raised.

Can anyone recommend a good paint that can stand the abrasion of being winched in and out of the keel case?

Hopefully then it wont need doing as often .

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[mirabriani]

I have a similar problem on my Trapper
Local swindlery sold some expensive dark brown stain.
I am afraid I threw the remains away after it leaked in locker
and I cannot remember the name.
However I can tell you it did not work very well.
This season I scraped and wire brushed the rust, sealed it
with epoxy and will anti foul over the lot.

I hope this works

Regards Briani

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[jeffro]

i used expensive epoxy tar as recomended by my suveyor cleaned keel back to shiny metal and gave it two coats looked luvly when it went in six months later now ashore a pile of rust again DUNNO Jeffro

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[fastjedi]

Multiple coats of 'G4' ..... It will build up a thick 'plastic like' coating which should have good wear characteristics

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[ashanta]

Blakes Keel prime is quite good. It's a black tar like substance, usually lasts for a couple of seasons before redoing. As you would expect you must follow the instructions for best results.

Regards.

Peter.

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[ianabc]

Standard method is.....grit blast to white metal.... wear carbon filter mask with felt prefilters, eye protection, (perhaps "borrowed" swim goggles) No touching of surface... contaminates surfacec) Apply zinc primer (not spray type but brush on zinc....check for real Zn to 70/80 %, 2 coats then epoxy, 2 or 3 coats......then anti-fouling....

<hr width=100% size=1>Building a steel sailboat in Comox, B.C. Canada.

 

[SlowlyButSurely]

On my steel boat the only thing I've found that really lasts is International epoxy. It sticks well if the surface is not perfect too.

Grit blasting is best but failing that clean it up with a sanding disc in an angle grinder, or if you find that you end up doing it the day before launching, as frequently happens to me, just clean it up as best you can. Then slap on at least 5 coats. It will stick to rusty metal, but obviously the better the preparation the longer it will last.


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