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It's not a big scratch. How do I use sheets to fix it? Won't I be pasting the sheet onto a large part of the undamaged gel coat and then have to sand that down?A-a-ron wrote:Working with fibreglass daily, I’d recommend that if you wanted to fix it up to grab some fibreglass sheets and some gel coat. Make sure the fibreglass is 10mm or so over the whole section to ensure it has some strength and you roll it out to get the air bubbles out, don’t be afraid to throw a couple sheets on it as it can be sanded back to be level and then you can gel coat it. Fibreglass will need to be scuffed up for gel coat to stick, just as a tip so you don’t glass it then try paint it. Be careful of making a hot mix of resin and gel coat because it can set pretty quickly and reach temps of 140oC plus it’ll melt plastic..
Makes it look easy to fix if your a handy sort of guyskronkman wrote:I think some of the recommendations here a little over the top for the damage I perceive in the photos. I prefer to use epoxy and filler to make a paste (particularly on non horizontal surfaces) but as always there are more than one way to skin a cat.
I only gave this a cursory look but all the info you need seems to be here. https://www.boatingmag.com/how-to-repai ... oat#page-6
Is it just the gel coat that’s cracked off and no cracks to the actual fibersglass structure? Little hard to judge off photos. But yea you’d have to paste a sheet on and then sand it back so it looked like new if that’s what you wanted to do.sturgeon wrote:It's not a big scratch. How do I use sheets to fix it? Won't I be pasting the sheet onto a large part of the undamaged gel coat and then have to sand that down?A-a-ron wrote:Working with fibreglass daily, I’d recommend that if you wanted to fix it up to grab some fibreglass sheets and some gel coat. Make sure the fibreglass is 10mm or so over the whole section to ensure it has some strength and you roll it out to get the air bubbles out, don’t be afraid to throw a couple sheets on it as it can be sanded back to be level and then you can gel coat it. Fibreglass will need to be scuffed up for gel coat to stick, just as a tip so you don’t glass it then try paint it. Be careful of making a hot mix of resin and gel coat because it can set pretty quickly and reach temps of 140oC plus it’ll melt plastic..
Mattblack wrote:Mum always used to say 'a stitch in time saves 9'.....if you go to a surf shop, you can pick up small ding kits for jobs like this. If you want peace of mind, stick some heavy duty duct tape or gaffer tape over the scratch and it will temporarily seal it until you fix it properly.