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Old 10 September 2016, 18:15   #1
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Removing anti foul paint

Whats the best way to remove anti foul paint, previous owner painted the hull in this horrendous blue anti foul paint, want to put the hull back to its original orange, its on my 6.4m tornado, will i have to repaint the hull in orange?
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Old 10 September 2016, 19:44   #2
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A lot of hard work scraping and sanding
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Old 10 September 2016, 19:54   #3
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Yep, hard work.
The previous owner of my boat had antifouled all the (white) hull, so it was a foul (!) Blueish mess.
I used International antifoul remover, a paint brush, a car ice scraper (the rubber follows the curves of the hull) and a cloth to wipe the hull clean for the last layer.
It worked really well and the boat looks way better.
I only cleaned above the waterline but I assume the below water stuff is easier as its somewhat eroded and therefore less intact.

Only in a really well ventilated space.
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Old 10 September 2016, 19:56   #4
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I feel your pain....

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You do get an anti foul remover, I'm considering having it soda blasted, lad that does it reckons a couple hundred quid.

Sounds like a bargain!
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Old 10 September 2016, 19:56   #5
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Originally Posted by Iron Dials View Post
Yep, hard work.
The previous owner of my boat had antifouled all the (white) hull, so it was a foul (!) Blueish mess.
I used International antifoul remover, a paint brush, a car ice scraper (the rubber follows the curves of the hull) and a cloth to wipe the hull clean for the last layer.
It worked really well and the boat looks way better.
I only cleaned above the waterline but I assume the below water stuff is easier as its somewhat eroded and therefore less intact.

Only in a really well ventilated space.
what was the name of the antifoul remover? been looking at this owatrol marine strip stuff anybody know if its any good?


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Old 10 September 2016, 19:57   #6
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I feel your pain....

Attachment 115858

You do get an anti foul remover, I'm considering having it soda blasted, lad that does it reckons a couple hundred quid.

Sounds like a bargain!
have you been using anti foul remover? does it remove the anti foul paint well and bring back the original hull colour as if it was never on there?
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Old 10 September 2016, 19:58   #7
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Don't know yet, plucking up the courage to start it.
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Old 10 September 2016, 20:01   #8
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Don't know yet, plucking up the courage to start it.

I'd go for soda blast Alan
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Old 10 September 2016, 20:05   #9
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Removing anti foul paint

It's looking likely with my timetable over the next couple months
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Old 10 September 2016, 20:05   #10
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International Interstrip
http://www.yachtpaint.com/irl/diy/pr...rstrip-af.aspx
It just reveals what's underneath, in my case a nice clean unmarked hull.

Once you break through the top layer its ok, use top of stiff brush. It dried way faster than the instructions suggested so theres a bit of trial and error to get your rhythm.
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Old 10 September 2016, 20:09   #11
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International Interstrip
http://www.yachtpaint.com/irl/diy/pr...rstrip-af.aspx
It just reveals what's underneath, in my case a nice clean unmarked hull.

Once you break through the top layer its ok, use top of stiff brush. It dried way faster than the instructions suggested so theres a bit of trial and error to get your rhythm.
reckon it will bring my hull back as it was originally as if there was no anti foul on it?
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Old 10 September 2016, 20:17   #12
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Mine did.
Do a managable size first, if you're happy keep going, if not try a different method.

You have to do a few runs over each area to get through it all. I don't know how much is on your boat so can't estimate that. Keep agitating it while wet and don't let it dry out. You'll get the feel of it quickly.
Get a cloth to wipe off the last layer of "sludge", you'll know when you get there.
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Old 10 September 2016, 20:18   #13
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Mine did.
Do a managable size first, if you're happy keep going, if not try a different method.

You have to do a few runs over each area to get through it all. I don't know how much is on your boat so can't estimate that. Keep agitating it while wet and don't let it dry out. You'll get the feel of it quickly.
Get a cloth to wipe off the last layer of "sludge", you'll know when you get there.
ok mate cheers for the info will order some
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Old 10 September 2016, 20:38   #14
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FYI - if the original antifouling job was done properly then they will have "keyed" the hull with a good sanding. You'll have to deal with that. Hope they were lazy barstewards....
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Old 10 September 2016, 20:39   #15
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FYI - if the original antifouling job was done properly then they will have "keyed" the hull with a good sanding. You'll have to deal with that. Hope they were lazy barstewards....
oh right whats that then?
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Old 10 September 2016, 20:53   #16
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Anti-fouling grips the hull much better if its "roughed up" a little instead of glossy like shiney gelcoat.
A proper application starts with a rub of something abrasive.

The people who did my boat conserved as much energy as possible so the hull was fine.
When you try the small area you'll see if it was "keyed"
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Old 10 September 2016, 21:03   #17
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Anti-fouling grips the hull much better if its "roughed up" a little instead of glossy like shiney gelcoat.
A proper application starts with a rub of something abrasive.

The people who did my boat conserved as much energy as possible so the hull was fine.
When you try the small area you'll see if it was "keyed"
ah i see just text the previous owner asking if they did or not, only had the boat 3 weeks see, so just waiting on a reply
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Old 10 September 2016, 21:08   #18
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...so just waiting on a reply
I'd imagine that they're delighted to hear from you again at 2200hrs
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Old 11 September 2016, 08:51   #19
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I used 3 or 4 tins of inter strip on a 7.5m. In the end I gave up and left it scruffy. The boat was on a trailer, so it got damaged and more fell off. I thought it would be an easy number as it was all blistered but I spent days on it to get less than half done. Biggest issue is corners and non flat edges, when interstrip fails you will end up scraping manually and will realise anything mildly sharp will removed gel coat on corners or un flat surfaces.

I originally had a quote from arc to soda blast it. It was such a reasonable price I wish I had done it.
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Old 11 September 2016, 21:53   #20
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I'd imagine that they're delighted to hear from you again at 2200hrs
Haha, had a reply this morning, said it "had a light sand by hand" so until i get it off wont really know how bad it is
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