Any suggestions on what to use on the marks shown in the picture? Some seem to be flush with the Gel coat. I have tried bleach/detergent and also toilet bowl cleaner and also pencil eraser with no help whatsoever. This is a less than 1 year old boat. Thanks
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black marks on white fiberglass boat
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December 16, 2014 at 1:27 pm #1484749
What are the marks from?
First thing I’d try would be Welsley Bleeche White.
http://www.carid.com/black-magic/black-magic-tire-cleaning-9901520.html
If that didn’t work, I’d try Goo Gone.
-J.
December 16, 2014 at 1:35 pm #1484753What are the marks from?
no idea, thanks for the reply. Your post made me think that there was perhaps some stuff in the shed from the former owner. I found some West Marine Black Marks remover that seems to work to some extent on the marks although very slowly and does not seem to get it all, but definite improvement.
December 16, 2014 at 1:49 pm #1484768If it’s like a scuff mark go to a auto parts store. Ask for a product used to remove pinstriping from cars. It fits on a drill and looks just like the rubber gum type earsers we had in school. It will remove the mark without damaging the paint.
Anything else and i can’t help you. Good luck let us know what you find.December 18, 2014 at 7:47 am #1485578After cleaning the best I could, I found fresh marks on one side. I think these might be from dragging a garden hose around the boat for the wash down.
December 18, 2014 at 9:17 am #1485630I 2nd the Magic Eraser after owning a white Skeeter for 3 years.
December 18, 2014 at 9:22 am #1485640My Beckman nets leaves terrible black marks on my white fiberglass. A Magic Eraser is quick and easy though.
December 18, 2014 at 9:28 am #1485653Buff them out with some light polishing compound and a buffer, maybe? A lot depends on if they are “on” the gelcoat or “in” the gelcoat.
Are they really something deposited on the surface? Or are they abrasions that cut into the gelcoat?
December 18, 2014 at 3:17 pm #1485817Mine has the same marks on it. I’m almost positive its net rash and i cant get it off my boat either. I’ll have to try the magic eraser.
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