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Bottom paint removal

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WindDancer
1st Mate

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USA
34 Posts

Initially Posted - 12/07/2010 : 21:16:33

Hi everyone,

Its time for the long list of winter projects and one that I'm going to take on is bottom paint removal. I want to remove the bottom paint only and not the barrier coating. I have been debating on using a soda blaster or a paint remover. I appreciate all the information that I have read on this site with regards to the soda blaster. I have also been looking into using a marine stripper called Peel Away Marine Strip 2 that will remove only the bottom paint. So my questions is, has anyone used this or similar product and what was their results. Or can I use a soda blaster to just remove the bottom paint while leaving the barrier coating intact.
Which would work the best?

Thanks for your help

Bruce
Wind Dancer
250 WB 861
Clearlake Oaks Ca

Bruce and Suzette
Five O' Clock Somewhere
2006 C250WB #861
Clearlake Ca

Edited by - on

Stinkpotter
Master Marine Consultant

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Djibouti
9080 Posts

Response Posted - 12/07/2010 : 22:41:48

The [url="http://www.dumondchemicals.com/html/peelaway.htm"]Peel-Away website[/url] says Peel Away Marine Strip <b>II</b> won't affect an epoxy barrier coat. Apparently their regular one will. Note that <b>II</b> takes twice as much to do the job...

I wouldn't trust any kind of blasting, soda or otherwise, not to erode the barrier coat.

Edited by - Stinkpotter on 12/08/2010 07:35:28

GaryB
Master Marine Consultant

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USA
4304 Posts

Response Posted - 12/11/2010 : 09:34:13

When I checked into soda blasting a couple of months ago the guy I spoke to said they can control how much they take off very precisely. They can take the bottom paint down to the barrier coat without taking off the barrier coat or they can take it down to the bare fiberglass. They can also open up any blisters you might have if you want that done or leave them as is. He explained that a good barrier coat is really not very easy to remove.

He gave me an estimate of $700 to remove my bottom paint and said it would take a half day. When they are done they remove all traces of the debris and dispose of it in an approved way.

The yard said it would cost me between $1,100 and $1,400 if they did a bottom job depending on what type of paint they use and that's without removing all of the old paint.

I will probably go with the soda blasting and then put the new paint on myself. It will probably cost the same but I'll be starting with a clean bottom. No telling how many pounds I can lighten the boat by removing multiple old layers of paint.

Edited by - on

Voyager
Master Marine Consultant

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USA
5370 Posts

Response Posted - 12/14/2010 : 21:30:10

I'd have to say that the skill and attention of the soda blasting operator would make a great deal of difference in the results you get in the job. If the operator were not paying close attention from time to time, much of the surface barrier coat would probably be fine, but you might have some thin spots.

When I applied my barrier coat two years ago, I needed to apply at least five to six layers to obtain the desired effect. I did six. In the past two years, so far so good.

If you can achieve more consistent results using Peel Away Marine Strip II, then go for that. Instead, you could go with soda blasting, then apply another few coats of barrier coat. However, check the Interlux barrier coat instructions on the website, as I believe you should not add coats to fully dry barrier coat paint.

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Notice: The advice given on this site is based upon individual or quoted experience, yours may differ.
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.