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10 Reviews
90% (9)
10% (1)
0% (0)
0% (0)
0% (0)
90% Recommend this product (9 of 10 responses)
By ScottH
May 6, 2018
Oxidation Eater
Used this product on a friend's 22 foot boat with heavily oxidized Gelcoat. The gelcoat felt like sand - it was in major need of some compounding, I used LC wool foam pads on a Makita 5000C DA and it ripped right through the oxidation and left an amazing shine. I followed up with a paint Sealant to add protection. Working time was good but likely compromised by how dry the gelcoat was. Great product. ScottH
ProsEats oxidation away, doesn't smell bad
By Jeff
December 12, 2017
Great product!
I bought an older boat that had some oxidation so I pulled out my DA with an orange cutting pad and tried several compounds. Most compounds were for paint but one was for gelcoat. They did a fair job but noticed my gelcoat had orange peel and these compound/pad combo wouldn’t get all the oxidation off. I bought the Marine 31 gelcoat heavy cut oxidation cleaner and a wool pad and it is getting down in the orange peel valleys and removing the oxidation. I was afraid I was going to have to wet sand but not anymore. Great compound for gelcoat!!!
ProsCuts great! Medium working time
ConsDusts some but I’m fine with that since it cut so good.
By Richard Weaver
Sebring, FL
September 12, 2016
Great Product
Cut a big job down to size!
By Dan Hart
San Jose, CA
June 30, 2016
Marine 31 Gel Coat Oxidation Cleaner
Works really well, my boat was completely oxidized. This product really took the oxidation off. Will buy more when needed.
ProsEasy To Use Works Well Without Heavy Scrubbing
By John
April 12, 2016
EXCELLENT RESULTS ON MY SLIGHTLY FADED 2008 SEA HUNT Followed up with Sealant Looks great no flat spots or streaks. Would recommend highly .
By Paul
Pittsburgh, Pa
January 11, 2015
Amazing results with little effort
My topside was oxidized, I would describe it as medium oxidation. I used this product and my dual action buffer with a heavy cut yellow foam pad. With just two or three easy passes the oxidation was gone and the Gelcoat shine like new once again. This worked much better than the 3M product I normally would use. Great product.
ProsEase of use, duration of time product is workable, dust,ess removal.
ConsNone found
By Ray
Lake Gaston, NC
June 26, 2014
Fast & Easy
I couldn't believe how well it worked on my heavily oxidized boat. Put it on with an orange buffing pad and the oxidation came right out. Didn't have to do multiple applications or a lot of the product to get the original shine back. It sold me on all Marine 31 products.
ProsEasy to apply, works the first application, buffs out quickly, not a lot of the product is needed to get excellent results. PS. Super fast delivery.
By Mark
Northern Virginia
June 23, 2014
Marine 31 Gel Coat Heavy Cut
Used it on my 2011 Heartland Big Country. Removed the oxidation and made the coloured front and rear caps shine like new.
By Fishy One
May 14, 2014
Good stuff
Does what it is supposed to do I used a DA and wool pad and the gel came to life
ProsEasy to use and goes a long way
By Darren H.
August 26, 2013
Great Product!,
Bought this product hoping to restore a shine to a 1994 Grady White that had staining and heavy oxidation. Results exceeded my expectations. One pass using a Flex 3401 polisher and a light cutting pad and the oxidation and staining were gone. I highly recommend if you are looking to make your boat look new again.

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