Does this coating need to come off before doing fibergl

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This is a picture of my trunk floor, the lighter colored area is fiberglass without anything on it, but there?s a black coating of something that?s covering most of it.

Correct to assume that that black coating needs to come off before I can do any fiberglass reinforcement repairs?

Thanks!

[NYK]

Yes, clean back to gelcoat, clean with acetone before fresh glassing. My preference is always to use epoxy in place of resin as it gives a stronger bond.

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Thanks

[Bits]

Doubt you will find gelcoat inside the boot.

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Is the black coating I have typical? Paint or some other material?

[NYK]

When I bonded a new front end on my Plus 2 I also have remove loads of ?crap? from the underside of wings etc. I used a hand scraper with tungsten blade, they are superb for removing surface contaminants, in many ways much better than power tools as it does not produce huge clouds of dust.

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Good tip, thank you.