Antifoul Sealer, how do I remove it from my hull?

[baywatch]

Just purchased a boat that has some crazy sealer on the hull. The Surveyor referred to it as "previous antifoul and heavy antifoul sealer which is peeling and discoloring the vessel underbody." That is his quote from the survey. The boat was in northern michigan and they evidently put this stuff on the hull to protect it from the industrial waste that plagues many of the water ways in those parts.

Has anyone ever heard of this stuff and if so what do I do to get rid of it . The surveyor said to scrape off the thick stuff, then sand, then use a buffing compound, and then wax. In ideas are appreciated!!

[flatlander]

oven off works on paint for a couple of bucks it might be worth a shot

[liesel]

Scrape off the loose stuff and then get your paper suit, a good respirator and an orbital sander connected to a shop-vac and start sanding. It's really the only way. You can't buff and wax out 80 grit sanding marks. :lol: For future reference, never buy a boat with bottom paint if you don't want a boat with bottom paint on it. It's too much work to take it off and bring the bottom back to original.

[baywatch]

It isn't actually bottom paint. The stuff is clear, but it is starting to discolor a tad. I don't pick it up until next week I will try and attach some photos. The surveyor told me to either wet sand and then use a light buffing compound or to just buff it three times. First using a course compound then medium and lastly a light one. I think I will try that approach. Everyone claims that 3M has a good product. What are the names of 3M's heavy, medium, and light compunds?

[baywatch]

If you look at the top photo here you can see the line across the transom at the water line. That is the sealer stuff, not a water line. It definately isn't as bad as bottom paint.

[baywatch]

Ok evidently the file size of the photos was to large. I will try and figure this out and get the pics up

[baywatch]

So I have the boat home and and went to town on a section of the hull. I first washed the surface, then wet sanded with 2000 grit 3m paper, then used 3m perfect it 3000 extra cut rubbing compound with the Dewalt buffer running at 1500 rpms, then I went over this with the 3m perfect it 3000 swirl mark remover, and lastly hit it with some regular meguires marine wax followed by a polish buff. It looks good as new. The only I noticed is that the worked area is a little bit brighter of a white color, but it is consistent at the water line and below so it looks like that is how it is supposed be.

I did order a four pack of Frenzy products and I plan on using the waxing frenzy as my final step in the process once it arrives.

[baywatch]

So I finished my wet sanding Journey months ago but never posted any pics after I applied some frenzy.

[baywatch]

I suppose the fact that you can see the lreflection of leaves on the the ground means that I revived at least some of the shine. I wish I would have thought to take a before picture for the before and after effect. Here is a full profile after she got a treatment from the frenzy.