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Catalina/Capri 25/250 Sailor's Forums

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How to Paint a rusty Trailer?

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ssteakley
Captain

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USA
467 Posts

Initially Posted - 06/02/2003 : 18:46:23

OK, I have two summer projects..my Hobie 16 trailer and My Catalina 250 Trailer. Both are white painted metal. the Hobie trailer is an 82' and parts are very rusty, my 99' Trailrite trailer for the 250 just has light rust. The guy at Home Depot advised using
1. PH-OSPHO-RIC PLUS+ which prepares rusted surfaces for painting
2. then Rustoleum Primer For Rusty Metal
3. Then Paint with final coat
Is there another type of paint I should use??
thanks,
Steve

<img src="http://im1.shutterfly.com/procserv/47b3dc32b3127cce94d57c8cff3b0000001010" border=0> Moon Chaser #385WK <img src="http://www.catalina25-250.org/forum/forum1.gif" border=0>

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Bruce Ebling
Navigator

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USA
155 Posts

Response Posted - 06/02/2003 : 20:12:41

I have a Wing Keel trailer with much of the same problem you have. I plan on taking it to a local company that sandblasts heavy equipment, they will sandblast and prime the trailer very reasonably. Then I will repaint the trailer or maybe have it powder coated which is an excellent coating. It is nearly indestructable.
Bruce Ebling
89 WK "Selah"

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ClamBeach
Master Marine Consultant

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3072 Posts

Response Posted - 06/02/2003 : 20:40:23

Unless you're going to get them sandblasted, ospho + derusto primer + finish coat is doing about the best you can do in your driveway.

For repainting my trailer, I've been contemplating using spray-on truck bed liner over the top of my finish coat. The bed on my truck still looks like new after 10 years. Even some of the spray can stuff seems pretty good. I re-did the rocker panels on my car and it's holding up remarkably well.

Currently maintaining two holes in the water...'77 Venture 23 and new to the family,
'78 Catalina 25

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Dave B
Admiral

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Mali
863 Posts

Response Posted - 06/02/2003 : 20:51:45

I suggest using a "rust reformer" on all rusty areas before priming and painting. Rustoleum used to make one, and I've heard of a few others... Rustoleum's is a milky fluid that turns bare ferrous metals and rust black--I don't know what's going on chemically. But I've used it on older rusty cars (before galvanized panels) and have been impressed by how it stops deep rust in its tracks.

Any closed tubes or box sections? That's a whole different problem.

Dave Bristle, 1985 C-25 #5032 "Passage" SR/FK/Dinette/Honda in SW CT

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cfoucht
Deckhand

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USA
19 Posts

Response Posted - 06/02/2003 : 22:56:59

I used a product called POR-15 on a very rusty steel cradle. It's a miracle product for rust! The web site is http://www.por15.com.
Carl Foucht
SR/FK 5933

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ClamBeach
Master Marine Consultant

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3072 Posts

Response Posted - 06/03/2003 : 00:42:25

Osphso is also a 'rust reformer' or 'rust converter'.
Most of these products are based on phosphoric acid or tannic acid (or a combination of both).

The tannins or phosphates in the acid have a stronger reactivity with Iron than Oxygen. They react with existing Iron Oxide (rust) and turn it into Iron Tannate or Iron Phosphate.

Because these compounds are at a lower energy state than Iron Oxide, they cannot 'rust' anymore.

Here's a link to some good basic info.

http://www.alan.net/prgshoptips/rustconv.html

Currently maintaining two holes in the water...'77 Venture 23 and new to the family,
'78 Catalina 25

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Steve Milby
Past Commodore

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USA
5935 Posts

Response Posted - 06/03/2003 : 12:07:17

Can you paint right over the rust reformers, or should you wipe any residues off first with tsp or some type of solvent?

Steve Milby "Captiva Wind" C-25 T/FK #2554

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Douglas
Master Marine Consultant

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1595 Posts

Response Posted - 06/03/2003 : 12:14:18

Try having a look at this product. I came accross it when restoring old cars. Its a little costly but I can realy recomend it. http://www.por15.com/

Doug&Ruth
Triska (Alberg 29)
Tacoma Wa.

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Dave B
Admiral

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Mali
863 Posts

Response Posted - 06/03/2003 : 21:51:42

<BLOCKQUOTE id=quote><font size=1 face="Verdana, Arial, Helvetica" id=quote>quote:<hr height=1 noshade id=quote>
Can you paint right over the rust reformers, or should you wipe any residues off first with tsp or some type of solvent?

Steve Milby "Captiva Wind" C-25 T/FK #2554
<hr height=1 noshade id=quote></BLOCKQUOTE id=quote></font id=quote><font face="Verdana, Arial, Helvetica" size=2 id=quote>
The Rustoleum product dries to a hard, clear coating over the blackened metal/rust. The directions say you should paint over it.

Dave Bristle, 1985 C-25 #5032 "Passage" SR/FK/Dinette/Honda in SW CT

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MikeM
1st Mate

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72 Posts

Response Posted - 06/04/2003 : 08:40:57

Walmart sells a rust convertor in the automotive section, small bottle. Turns rust black and creates a primer ready for painting. Make sure to pour the convertor (after shaking) into a separate container and use a small bruch. Otherwise you will spoil the entire bottle by dipping the contaminated brush into the bottle.

Mike M
Marblehead, MA
C25 #1212

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The Officers, Staff and members of this site only provide information based upon the concept that anyone utilizing this information does so at their own risk and holds harmless all contributors to this site.