Cleaning Brown Waterline Stains

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Cleaning Brown Waterline Stains

Postby EmergencyExit » Tue Jan 27, 2015 9:39 am

Recently had some truly nasty brown stain to clean off a hull - boat had been in semi freshwater for a long long time.

After Googling around I tried Bar Keepers Friend ($2 at the local Dollar General), which is a powder with Oxalic Acid in it. Worked very well. I just applied it to a wet surface and lightly rubbed with a ScotchBrite backed sponge (using the rough side on the worst spots), then rinsed after about a minute. It took a couple passes around the waterline in short sections, but worked good..

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Postby astrorad » Tue Jan 27, 2015 3:59 pm

I use Bar Keeper's Friend in the bath tub and the kitchen sink...good stuff...doesn't scratch either.

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