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Ensign Sailing Forum

Walnut Stains on Deck
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Hi James,

Thank you for the advice! I purchased a marine hull cleaner with oxalic acid as you recommended, and it worked! The stains were real deep so I had to apply it a few times, and I also used gloves as recommended. Product photo attached.

Regards,
Bill

To clean gel coat I use 3 different common chemicals,  generic CLR which is an acid that is great at removing mineral stains. Simple green which removes greasy oily stains. Bleach which is good at removing stuff that was living like algae and scum. In your case I would try liquid bar keeps friend which is oxalic acid and mild abrasive. Just use all the common cautions as it's very strong and needs rinsing before drying. If that doesn't work maybe comet with bleach might be my second try.

When non skid is clean and dry you can actually wax it with the wax in an orange bottle called NU Finish at Walmart. It does not make it slippery, but test a section first to make sure you trust it


Hi Ensign Sailors,

I'm wondering if anyone has a suggestion regarding the removal of walnut stains from a white gelcoated deck. Unfortunately, a squirrel moved in last winter and he/she had an affinity for walnuts.

I tried scrubbing with soapy water and a brush. Then I tried a Magic Eraser which was more effective but there's still a lot of staining left. Any other ideas?

Regards,
Bill Tonetti 
Fleet 23
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