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Letter 10712
Painting an aluminum boat
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I'm currently building an aluminum boat and I would like
to paint this boat once it is complete. I've talked to a few
different people about the method used to paint aluminum but
I don't quite know what the correct method would be for
painting aluminum?
I would appreciate any help that you may provide.
Gregory P [name deleted for
privacy]
- Lafitte, LA, USA
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Hi,
I saw your post on painting an aluminum boat. I could not
find an answer. Could you share any responses you got. I
have a Gregor aluminum v-hull and I want to paint it brown
for freshwater duck hunting. Any info would be appreciated.
Thanks,
M Millen
- Los Gatos, CA
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(2002)
If you want to paint an aluminum boat you first have to use a
aluminum oxide primer. Make sure the boat is totally clean
before priming (lightly sand the boat) then use a tack cloth and rub
the boat down. Then prime it with the aluminum oxide primer. after
that dries, you can paint it with whatever you like.I have done 4
boats this way...they turned out great!
Hope this helps,
Marshall

James Marshall
- hot springs, Arkansas, USA
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B
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We thank James for this information --
but please note that he is suggesting a primer
designed
for aluminum oxide surfaces,
not a primer comprised
of aluminum oxide. You will
see the confusion running through this thread until the
entry for May 15,
2007 which clarifies what James
is speaking of. Sorry.
 Ted Mooney, P.E. finishing.com Brick, New Jersey
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Good advise. How did you apply the oxide primer?
Wagner Sprayer [link is to product info at Amazon]? I am a
novice at this, so be real basic please. Thanks! I just bought an
aluminum jon boat that needs a good paint job to bring some life to
it...
Paul 
- Gilbert, Arizona
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I am getting ready to paint my 12 ft aluminum boat and I
understand that I need to use a self etching primer but my question
is do I need to get all of the old paint off or just get off what I
can and use the primer over the bare metal as well as the sanded down
old paint. Sanding all of the paint off is a hell of a job. Any
suggestions.
Christopher L 
hobbyist - Tamarac, Florida
You want to remove any non-adherent paint (because it does no good
for your fresh paint to stick to non-adherent paint), and you want to
scuff the surface of the remaining paint, Christopher. But there is
little benefit in sanding away adherent paint. (Readers please note
that this advise is for the owner of a 12-foot aluminum boat, not for
a large boat or for a boat manufacturer).
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Ted Mooney, P.E.
finishing.com
Brick, New Jersey
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++++
Hello,
I recently also started work on my 1966 12' Aluminum
Speed Master and had to strip down about 8-10 coats of
paint. Try using Klean-Strip KS-3 Stripper. The BEST!! about
$15 or so for a large amount. I had to go through soooo many
coats, both in and out, that I went through 1 and 1/4 cans.
Which isn't bad, seeing that the one at some boat store I
bought cost double, and was not as tough as this stuff is..
I guess I will ask around about this aluminum oxide primer,
and see if I can get the low down, since it seems that we
are all in the same place and are getting ready to paint
soon. Try the Stripper. I guarantee it!!
Mario G [name deleted for
privacy]
- Torrance, CA, United States
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Dear sirs ,
I am the proud owner of a 12 ft V-Hull aluminum boat.
Great little boat but in dire need of being spruced up. My
problem is that I would like to paint and I'm not sure what
steps I need to follow nor which products I should use.
Kindly let me know what you would suggest in layman's
terms .
Thank You, Very Much Appreciated,
Lourdes G [name deleted for
privacy]
Hobbyist - Lake Worth, FL, US
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I just got a 14 ft aluminum jon boat and I want to paint
it but I need to know where to find some aluminum oxide
primer. got any suggestions?
Billy J [name deleted for
privacy]
fishing guide - Celina, TX, US
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Ed. note: See the entry of May 15,
2007, Billy. You are looking for
a primer designed for aluminum oxide surfaces, i.e.,
aluminum boats, not a primer based on aluminum oxide
chemistry.
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Can anybody help with information re process and materials to be
utilized in painting and protecting of new aluminium 5.6 m
recreational vessel.
Many thanks,
Mike W 
retired surveyor - Perth, Western Australia, Australia
Hi, Mike. As we get towards bigger boats & newer boats, more
professional approaches are required. These include cleaning with
Alumiprep 33 [link is to product info at Sailnet.com / Marine.com] and chromate
conversion coating with
Alodine 1201 [link is to product info at Sailnet.com / Marine.com] before
painting. These are hazardous materials (expensive to ship), and care
must be used to avoid environmental damage.
Regards,
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Ted Mooney, P.E.
finishing.com
Brick, New Jersey
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I have a old V hull aluminum boat that I want to refinish with my
son, I have all the old paint off and am ready to do all the patching
that will be needed to make the hull water tight. What is the best
product to seal the hull? Glass.......or what.
Thanks,
Eric W 
Father & Son - Jax, Florida, USA
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To paint Aluminum is labor intensive. The environmental
effects of zinc chromate (aluminum primer) is deadly to the
human body.
We use Aluma-wash then
Alumiprep 33 [link is to product info at Sailnet.com / Marine.com]
before the primer is applied.
Awl-Grip is the preferred color
paint involving a two part process that is expensive. All
Aluminum starts corroding (rusting) once it hits the air
while some have anodizing applied but if scratched or welded
the erosion continues. Our boats range from 40 to 200 feet
and few paint jobs last more than ten years.
In Ft.Lauderdale, a private tug named Hero still operates
for over 30 years without any paint. She is all aluminum
with an aircooled diesel and no thru-hulls. Her entire hull
covering exists of a wax coating on the inside and outside.
Zero problems and no maintenance after the initial coat.
steven m [name deleted for
privacy]
- Ft .Laud. Fla. USA
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Can I use
Awl-Grip to paint an aluminum jon boat?
If so, does all of the old paint need to be removed or just sanded?
Also, do I need to prime when using awl grip? Thank you for any help!
Greg E 
Hobby - Dania Beach, Florida
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I was fishing in Oregon last year near the Pacific Ocean where I
met a mobile boat cleaning service. The owner sprayed a chemical
compound on my aluminum boat, brushed it and washed it off leaving
the boat looking like new. What type of compounds would he have used?
Blaine H 
Fisherman - Windsor, CA, USA
Hi, Blaine. This acid wash probably contained hydrofluoric acid.
You'll see the same stuff used in some commercial truck washes for
aluminum tankers. Hydrofluoric acid is really dangerous stuff --
leave it to somebody else!
Regards,
 Ted Mooney, P.E. finishing.com Brick, New Jersey
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We live in Phoenix Az. and want to go boating during hot summer
months.We cannot touch the interior so we want to paint the interior
white. This boat has never been in the water and is brand new. what
kind of paint and where I can purchase the paint? Thank You.
ps. The boat color is olive drab and not a smooth finish.
Richard P 
hobbyist - Phoenix, AZ, United States
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What is the fastest and easiest method to remove a water
line from an aluminum boat hull? I have a new boat and
recently put it into a lake for four days. When pulled it
already had a "scum line" that I would like to remove as
easily and quickly as possible. What are product choices
that are effective for removal of the line? I would then
like to coat the hull with some type of product/protectant
that will keep scum lines from reoccurring.
I do not want to use an acid wash at this stage since the
line is on a relatively new surface. My mission is to
accomplish this feat as fast and easy as possible.
Dwayne R [name deleted for
privacy]
fishing enthusiast - Oroville, California, USA
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In response to Dwayne with the "scum line". I recently
owned a 14 ft. semi V aluminum boat and when I got it, it
looked terrible. It had been used in a local river that is
nasty. The scum ring on the boat was three layered and
terrible. I tried many things even a power drill and
attachment. I finally decided to try
Steel Wool [link is to product info at Rockler]. not
the kind that is course but in the wood working business we
call it angel hair. It took off all the rings with less
effort and more quickly than all the other attempts
combined. You could probably try brillo pads also. NOTE: My
boat did not have decals. Always use these with a bucket of
water to keep the surface wet. You may have to rinse every
foot and a half to prevent drying.
Jason W [name deleted for
privacy]
- Tupelo, MS, USA
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I am still not sure if you absolutely have to remove the
old paint on the boat before you paint again but I do know
the process after that. You should use a self etching primer
first. One coat is enough. It is available anywhere
automotive paint is. It has a catalyst so be sure to
purchase it too. Next 2 coats of epoxy primer are needed.
This is also a 2 part primer. Finally you can use any
automotive paint to paint your boat once you have went
through those steps. Be sure once you sand your boat to prep
for painting you use a lacquer thinner to remove any grease
etc., wipe it on and then wipe it off wet. Also you should
use a tack cloth after that to insure all dust removed. Then
just follow the primer and paint steps above. A previously
painted boat....dunno if you need to completely remove the
old paint though.
Justin R [name deleted for
privacy]
- Dyersburg, TN
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