View Full Version : 25 ft fish boat with heavy oxidation, been sitting for 8 years in the sun

steve's detailing
Mar 12th, 2012, 08:10 PM
i was going to try
m83 dual action cleaner polish ( da polish or cutting pad)
m7 glaze( da polish pad)
m26 yellow wax (finishing pad) .

i have been told this process works well. i wanted to see if any one else has used these products on a boat. thanks guys!

Mar 12th, 2012, 08:17 PM
It can work...

Is the boat paint or gel coat?

steve's detailing
Mar 12th, 2012, 08:35 PM
its a gel coat

Mar 13th, 2012, 03:38 AM
With that much exposure and time, I'm doubting that M-83 will make much of a dent. If you have it on hand, give it a shot.

That said, look at M-91 (Power Cut Compound) and M-67 (One Step Compound). Both of these products are essentially a 'rotary' product, but using an aggressive pad and realllly taking your time...a DA can get the job done.

Something that I have NOT tried is using, only heard about, is using M-45 (Boat rv polish) before compounding to help 'feed' that dried out gel-coat so it just won't **** out all the oils, et al when you begin.


Michael Stoops
Mar 13th, 2012, 07:21 AM
Bill is right here. While you absolutely can use those products on gel coat, you have to remember that gel coat is much harder than automotive paint and therefore generally requires more specialized abrasive products to get the job done. M83 is actually pretty light duty stuff, and if you've got gel coat that is heavily oxidized it most likely won't be up to the task. We would go with Bill's recommendations and completely skip M83.

steve's detailing
Mar 13th, 2012, 07:45 AM
what product could i use that is not in the marina line that is aggressive with good results ? The place i buy from doesnt have the marina stuff.

My goal is to feed the paint with m7 to make it pop

Mar 14th, 2012, 03:40 AM
You can try 'The Twins' (105 and 205). As to using M-7, off the top of my head, yea-should work. But I really don't know.

Are you getting you supplies from an auto store? I'm pretty sure they can get almost any Meg product from their supplier.

Reason I say that is I live in a small (10K) town and my local store can get Meg items within 24-48 hrs. I do have to pay full bore price, but at least I have that option.


steve's detailing
Mar 14th, 2012, 07:08 PM
ok thanks, its a cleaning supply warehouse but thats good to know about auto store!

May 3rd, 2012, 06:00 PM
Wow...8 years...that baby's gonna' be badly oxidized.

The following is a suggestion. I have not tried this technique, but it might just work for you.

Mike Phillips wrote an excellent article on using M07, which is filled with good oils, and he used the product on old, dull and tired, single stage paint. It was a lengthy process for ridding the paint of oxidation and I believe a similar technique might possibly work on gel-coat as well. It would be worth a shot anyway.

It would require a large amount of M07, some good terry towels, patience, and a whole lot of passion. It's also going to take some comprehension on your part following the article and applying it for use on a boat. In other words, forget any type of pad on a machine for now because I think it just cause problems. For one thing, that much oxidation is going to gum up the pads, create unnecessary heat build-up, and quite frankly might be very frustrating using a machine on such dry, oxidized, gel-coat. Here's a link to the article to which I'll refer you to: http://www.autogeekonline.net/forum/how-articles/25304-secret-removing-oxidation-restoring-show-car-finish-antique-single-stage-paints.html

Since this is gel-coat, I'd almost opt for getting and applying the Marine counterpart M45, rather that use M07. I love M07, but since M45 is for boats, then why not stick with something formulated specifically for gel-coat. I honestly feel that a similar application, like the one in the article, could be done on a boat and seriously cut down on headaches trying to use a compound with so much oxidation. Why not get as much of it off as possible, so that the compound you choose can work at it's peak potential. That's a statement, and not a question.

Obviously, since you're not going to be working with paint you're not going to see your terry cloth turn black. Instead it'll most likely begin to fill with oxidation. No doubt, you'll have to modify your technique a bit from what you read in the article.

This is only a suggestion. However, I've spent my entire life around boats. I understand well what 8 years of sun can do to gel-coat that's gone neglected.

I'm sure Mr. Stoops, or Mr. Pennington will chime in here with additional information. Perhaps even Mr. Phillips may chime in.

I also hope I haven't stepped out of line by posting a link to Mr. Phillip's article.

May 29th, 2012, 06:28 AM
If you have some trouble with not getting very good results(especially streaking or spot polishiung) Shurehold industries makes a very good compound called buff magic. I use it when I need something more aggressive then what meguiars makes and it has very good results! you are going to want to have a DA and wool pads help alot but I have good results with a foam cutting pads as well. I have a pic of a 37ft sea ray that I worked on earlier this year http://www.showautodetail.com/Gallery-2012.html its in the lower left hand side. The same company makes what they call pro polish that works with the same system but I just used meguiars one step cleanerwax and it came out great. keep in mind also this boat sat in the florida sun for 30 years.

May 29th, 2012, 07:19 AM
Without seeing the boat to really know the condition, it's hard to say what will work, but I have tried your proposal on boats with limited oxidation, and while it works, using the marine products like the M-91 or M-67 works much better. Also, these will work with a DA and a cutting pad, but it is alot quicker with a rotary. The best results I've had on neglected gelcote were achieved with wetsanding with 1500, then polishing with M-91, and topping with Flagship Cleaner wax. This was done to a green Mariah and a red Mastercraft, where the layer of dry gel was so deep that even feeding with pure polish before M-91 didn't help.

It may sound drastic, but remember that gel is alot harder and quite a bit thicker than auto paint.