CLEANERS

Aug 11, 2011
1,013
O'day 30 313 Georgetown MD
I have some really bad staining where I spilt Teak Oil on my cockpit walls and Lazarette lids. I have scrubbed with boat soap and water, I've tried acetone and Murphy's Oil soap. It's just not coming away. I found a product called FSR which I was told may work. Has anyone used it with success? Or if you have a product you may suggest. I have a buffer tool and I have no problem working it with my hands. Not looking for the easy way out, want something that genuinely works. Thanks in advance.
 
Sep 24, 2018
4,100
Catalina 30 MKIII Chicago
I've read that dawn works well but havent tried it. Following this thread to see what the experts say
 
Mar 6, 2008
1,425
Catalina 1999 C36 MKII #1787 Coyote Point Marina, CA.
Not an expert, but I would try Comet or Barkeepers Friend. Needs to be lightly abrasive
 
Jan 11, 2014
13,573
Sabre 362 113 Fair Haven, NY
Fiberglass Stain remover works well on a lot of stains. It won't hurt the fiberglass. BarKeepers Friend is also a good option because it contains oxalic acid and the grit is finer than other abrasive cleaners.
 

jssailem

SBO Weather and Forecasting Forum Jim & John
Oct 22, 2014
23,868
CAL 35 Cruiser #21 moored EVERETT WA
I like Bar Keepers Friend. Available at Amazon and many hardware stores. It is lightly abrasive and an acidic in powder form. I’ve used in on fiberglass and Formica to get out organic stains. Sometimes it works miracles.
I understand that a Mr Clean pad also might work. It will leave micro scratches that will dull the surface.
Always test these products in an inconspicuous place or scrap before diving in.
 
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Sep 24, 2018
4,100
Catalina 30 MKIII Chicago
I wouldn't use the magic erasers on anything that shines. My last boat was a 78 and we didn't clean without it. We try to avoid using it on our 94 though
 
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Dec 8, 2025
32
Oday 27 Tuscaloosa
Just last night I was reading about something like this. This guy recommended ZEP Heavy Duty Floor Stripper followed by an acrylic sealer ZEP Wet Look Floor Polish. He also recommends, as others have noted, barkeepers friend. He found that these appeared to be the exact same ingredients in way more expensive "boat" cleaners and had the same results.

 
Sep 24, 2018
4,100
Catalina 30 MKIII Chicago
Just last night I was reading about something like this. This guy recommended ZEP Heavy Duty Floor Stripper followed by an acrylic sealer ZEP Wet Look Floor Polish. He also recommends, as others have noted, barkeepers friend. He found that these appeared to be the exact same ingredients in way more expensive "boat" cleaners and had the same results.

Thanks for the tip on the Zep/Polyglow. I'm curious how it holds up to UV verses the Polyglow. I know of one person that used Polyglow and he hasn't redone any of it in 5-6 years if I remember correctly.

A good way to determine similarities between products is to take a look at the ingredients on the SDS sheets. We have a few chemists on the board that may be able to help if needed
 
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dmax

.
Jul 29, 2018
1,269
Telstar 28 Buzzards Bay
The creator of PoliGlow took floor wax and added UV protection - I doubt that ZEP floor wax has UV protection as why would they.
 
Sep 30, 2016
396
Island Packet IP 44 Ventura, CA
I wouldn't get too aggressive with it. Gel Coat is somewhat porous. Thats what makes it hard to immediately remove. I would try using whatever brush cleaner is recommended for the Teak Oil. That should get a lot and dilute the remaining. I would expect over time it will evaporate. Lots of warm sun will help.