Paint my boom? Would Love to hear some Pros and Cons - SailNet Community

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Old 10-27-2012
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Paint my boom? Would Love to hear some Pros and Cons

This winter I plan on doing a few upgrades...paint the deck, new electronics, that kinda thing. One thing I see is the slightly crusty end of my boom. I was thinking to sand it down nice and smooth then paint it...I'm partial to the dark colors or even to match my topsides which are a medium blue. A buddy said don't do it as when it starts to chip or gets scratched it'll look worse. A lot if racing boats have black booms and I assume some are carbon. I also see a lot of white booms. My mast is aluminum...Pros and cons of doing this?
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Old 10-27-2012
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Re: Paint my boom? Would Love to hear some Pros and Cons

I well-prepped my booms and painted them with a zinc-chromate primer and topped them off with Interlux Topsides Bristol Beige. Sure, I've had occasion to touch them up over the ten years since I painted them, but I've been pleased. I have a friend that used a Sears product spray can oven enamel and his continues to look very good.
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Old 10-27-2012
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Re: Paint my boom? Would Love to hear some Pros and Cons

Painted booms and spars look great when fresh, depending on the rigging setup they can get a bit beat up and start to look a bit ratty.

The existing boom was likely anodized originally, not sure about the rules for painting over that. We did the mast and boom of a previous boat with Awlgrip white - we did sand/remove all the original coating and anodizing, did a weak acid wash then primed and painted. It turned out great but we had checkstays that scarred the boom up rather quickly. Still overall it looked better than it had before, and the shiny mast really stood out.
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Old 10-27-2012
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Re: Paint my boom? Would Love to hear some Pros and Cons

Did ours with an interluxe product but canot remember the name after 6 years it is marked up in spots but looks 100% better than before. Try to get a dark primer then if the paint does chip a bit it will not be that noticable.
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Old 10-27-2012
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Re: Paint my boom? Would Love to hear some Pros and Cons

I would recommend looking for a powder coater that can handle the job. I made my spinnaker pole from aluminum tubing. I sanded all the anodizing from the surface until it was down to the base aluminum. It took about an hour to hand sand the 10ft pole. Then I took it to a powder coater and he did his thing. Since then the pole has been banged around a good bit. Not a scratch or chip anywhere.
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Old 10-27-2012
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Re: Paint my boom? Would Love to hear some Pros and Cons

Paint it - if it gets chipped, paint it again. A boom the size of yours is easy to dismount & take home. It's also good to take the hardware off once in a while so it doesn't seize in place. Put it back on with Tef-Gel on the fasteners.

You don't need to worry about old anodizing - it's more like a stain (actually a dye) than a coating - it won't peel or anything like that.

Don't forget to spray it with zinc chromate immediately after prepping and a solvent wash.

Use one of the scrubbers shown in the attachment in a small angle grinder to clean up the spar. You can get them at tool shops that sell auto body tools - they are intended for stripping paint and work great - WAY better than sanding.

Scrub the spar with Scotchbrite afterwards and then a solvent wash.
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Old 10-27-2012
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Re: Paint my boom? Would Love to hear some Pros and Cons

Best paint for booms is probably RUSTOLEUM, in spray cans and needs no primer, just scuffing of the aluminum. Ya gotta love 'fish-oil' based paints for 'marine' service. If you know how to spray: thin tack coat, let dry, then 1 full wet coat, let set about an hour or so, then full wet coat again, let fully cure for about a month .... then scuff and overcoat with automotive 'clear coat'. Cheap, fast, simple.

If you're a 'fanatic' let the clear coat fully cure, then flat sand with 2000 grit, then power buff with 3M Finese-it followed by 3M Perfect-it. Will make a long lasting 'Concours' (d'Elegance) finish.

When it needs redoing .... after many years, simply sand or use a stripper and re-do.
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Old 10-27-2012
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Re: Paint my boom? Would Love to hear some Pros and Cons





It killed me looking at that crusty paint job on the J24 and the two part paints are pretty TOUGH


On the other hand i will NOT refinish the Cal 29 mast due to the need to step it every season and the imposable task of NOT dinging it
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If a dirty bottom slows you down what do you think it does to your boat
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