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Let's talk about aluminum boat paint

8K views 27 replies 15 participants last post by  Kirkll  
#1 Ā·
So I have a '92 or thereabouts smoker craft and the paint is beat. Not that that actually affects things, but a little paint might help my wandering eye and save my wallet for a few more years. I plan to strip down to bare aluminum either chemically or mechanically.

My question though is about paint and primer. What primer is best for aluminum? Is self etching needed? Epoxy? I would like to be able to run it through a gun to avoid brush marks (I've seen the roll and tip method but I already have the gun I used for single stage on a couple vehicles). I've read comments that if you thin epoxy primers enough to run them through a gun they lose their strength, but that can't always be true because I've definitely seen people spray them. Do I even need a primer? It seems like Total Boat has paint that they claim doesn't need a primer.

Paint suggestions? This will be above the water line. Not painting the bottom.

Also anyone have any suggestions for a place in or around Sandy, OR that can make and apply some new vinyl decals and registration numbers?
 
#4 Ā·
I use zinc chromate for a primer on any bare metal and have not had a problem. On bare aluminum I will acid wash first. You could then use any topside paint, even Home Depot sells topside marine paint but in limited colors. I have not tried that yet. I tend to use an automotive enamel if I can, good shine and durability but like most paints costs more than it should, plus it sprays nicely.
 
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#9 Ā·
I am planning on painting my boat in the next two years. I am going to either use Alexseal topboat or Totalboat topcoat after using their primer. It has been recommended to me (and I plan to use it) to use the Alexseal roll additive. Its supposed to make rolling and tipping easier.

I have painted an aluminum boat previously (one primer coat and one top coat) using the roll and tip method and it came out really good. When I do it next ill sand after primer and do two top coats after light sanding the first top coat. The boats that I have seen do this ended up with great looking paint even after a few years. I have a recommendation for a guy who does walnut media blasting if you would like one.
 
#19 Ā·
I am planning on painting my boat in the next two years. I am going to either use Alexseal topboat or Totalboat topcoat after using their primer. It has been recommended to me (and I plan to use it) to use the Alexseal roll additive. Its supposed to make rolling and tipping easier.

I have painted an aluminum boat previously (one primer coat and one top coat) using the roll and tip method and it came out really good. When I do it next ill sand after primer and do two top coats after light sanding the first top coat. The boats that I have seen do this ended up with great looking paint even after a few years. I have a recommendation for a guy who does walnut media blasting if you would like one.
Did you spray a clear coat over your paint job John?
 
#11 Ā·
Well spent the day doing the strip down part. Not sure I like the all aluminum look. Still leaning towards gloss black.

Citristrip did pretty well though I learned some lessons. Would have been way easier to power wash the paint gunk off immediately but I didn't want it in my lawn so I used a plastic utility blade first. Took a couple coats. Still needs an ecetone wipe down to take the remaining residue off. Scraping the vinyl decals off was actually the hardest part.

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#14 Ā·
It's not as obvious from the photos, but the paint was beat. Having removed the factory vinyl decal lines there were bubbles from corrosion. I'm not oblivious to the fact that I'm putting lipstick on a pig, but I've always enjoyed making the most of what I have.

Also, having projects is good for me. Keeping my mind occupied keeps it off of my worries. Fishing is good, but fishing also means a lot of idle time.
 
#16 Ā·
Carquest carries a line of paint that I have had decent success with. Comes in three or four colors, just add the hardener and shoot it. I've had a gallon of the black for quite a while. Painted trailers, boats, couple of canopies. Seems to be pretty durable and easy to spray. You may be able to get just a quart. Looks like a fun project!
 
#17 Ā·
Might be too late But I walnut shelled mine many years ago 20???? walnut shells made a mess. But had a nice finish, but you've done great.
I went to my local auto paint supplier and they just recommend a two part epoxy base, Then I put on 2K primer then 2 part urethane top coat. PPG Deltron. It has held up really well as. far as sticking. Only issues were around any holes or protrusions. Make sure you coat the hole and the backside.

it has faded but has spent a lot of time in the sun. I could cut and buff and it would look great. Of course there are chips and scratches. Im going to repaint this summer and will just use same process except Ill base/clear. Boat will be living inside from now on so it will last way longer than me.
Ive had a pretty good luck with Omni products. The Deltron has become pretty expensive. .
 
#22 Ā·
You can find lots of airplanes on YouTube that were treated with zinc chromate and have corrosion issues.

Is it better? Probably. But in my experience is it's not a requirement for a good finish. Prep work and sealing the holes and edges .

I would definitely put some chemical sealer under a wrap.

Good luck, its a sweet little boat!!!!
 
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