Marine grade paint vs powdercoating? -
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Unread 02-01-2014, 11:33 AM   #1
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Marine grade paint vs powdercoating?

First off let me preface: I don't paint, nor have I researched painting various types of products and what the best application would be. I'm sure different people have different opinions. Anyway, I work in the offshore oil industry as a procurement specialist (commercial expert, not technical). I have plenty of fab shops that build multi million dollar pieces of equipment for us. We have a coating spec that they must follow to ensure these products stand up to the harsh salt rich environment. I don't know what it is off the top of my head, but I have been told its a very robust spec (Multiple coats xxx microns thick??). My question to the coatings experts out there: if applied correctly, would these types of paints hold up as good or better than powdercoating? Using my connections through my company I may have the opportunity to get all of my accessories (bumpers, sliders, painted at cost with just about any color I can imagine (or cheaper if i request standard colors) using marine grade paints. What do ya think? I know some people will say, just rattle can them... Makes it easier to touch up. I know that's an option already.

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Unread 02-01-2014, 01:53 PM   #2
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Well off hand the only thing i have used myself was old school Imron. Contained LEAD, and enough carcinogens to make a Walrus sterile . Even back then it was expensive and the use of it has special needs, Air suppy, special cloths etc.

But paint is still just a top coat. Prep is everything. We used products for prep and primer that were intended for the Imron anyway. Even the bare metal has a prep for it once media blasted. or rust goes to work right away. I recall the metal prep turned the metal a bluish color. keep surface rust that is not seen away.

but today's powder coats if done right are very good. Large stuff is why you guys still paint, imagine the size of a oven to bake a large off shore rig powder coat? somethings will always be painted.
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Unread 02-01-2014, 06:12 PM   #3
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Either can be a great choice for its given use. If you had an in at a powder shop that would be a good choice... You have an in at an industrial paint shop so that's a great choice!
You've already hit on the fact that powder doesn't get touched up and that might be the biggest consideration for something that's going to get beat on in the forest. I DO powdercoating and sometimes I recommend paint. Go with the deal in this case.
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Unread 02-01-2014, 09:02 PM   #4
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I think the products that you may be available to far exceed anything that you can find that is geared toward and marketed to auto and auto specialty performance industry. I grew up in a family business that was started by my grandfather building steel hull vessels such as trawlers small tugs and push boats/ barges. I can remember even as a child the five to six year blast and repainting of the equipment, cranes, heavy steel cribbing and so forth. It was constantly emerged and removed from salt water and still was preserved to a level that all the powder coat and POR 15 in the world could not match. It is like comparing polar bears to panda bears they are both bears but behave and survive in totally different environments. Just as the heavy marine coatings and paint will far surpass anything you can buy for a automobile.What people don't understand is like the previous post states is it is all in the prep and prime application that makes it so durable. The draw back is cost. I can not for the life of me recall what precoat he used but it was like ospho on steroids. Bottom line if you can do it I would do it you won't be disappointed, you already have seen it at work.
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Unread 02-03-2014, 10:53 PM   #5
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Marine paint specs for offshore and ship building involve a lot of zinc rich primers, epoxies and 2 part urethanes. These products are not much different than some products used for auto refinsh. The difference lies in the specs that dictate mil thickness far above what is used for OEM auto and refinish purposes.

They usually do not come out as aesthetically pleasing as auto refinish paints in the way of depth of gloss, distinctness of image, etc. but for your purpose it's probably not important considering the parts you're talking about painting.

I would do this if it's available to you vs powder coating but like other people stated, future touchup is going to be a consideration when these products are not readily available in small quantities.
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