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Old 13-03-2012, 21:58   #1
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Cleaning the Dirtiest Waterline

I have the dirtiest caked on waterline.
I tried all the commercial cleaners sold but have no luck.
Does anybody know of some chemical that will lift the sh----t ?
short of acid?
Thanks
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Old 13-03-2012, 22:26   #2
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Re: Cleaning the dirtiest waterline.

Have you tried a steam cleaner??
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Old 13-03-2012, 23:45   #3
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Re: Cleaning the dirtiest waterline.

If it's gelcoat wetsand and buff it. This is very common. No cleaner will get heavy waterline staining perfect, but sanding will make it look brand new again. I even take a little 2000 grit to paint stains sometimes, but paint usually doesn't stain like that.
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Old 14-03-2012, 00:13   #4
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Re: Cleaning the dirtiest waterline.

Just above the waterline on the gel coat -oxalic acid is good ..clears stains quickly ..but wash then repolish...
havent got any simple answers for the actual waterline tho..
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Old 15-03-2012, 13:26   #5
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Re: Cleaning the Dirtiest Waterline

Have you tried toilet bowl cleaner?
I have used it successfully on dirty stained decks.
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Old 15-03-2012, 13:41   #6
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Re: Cleaning the Dirtiest Waterline

You mentioned you have used all the 'commercial cleaners'. I always use Dawn dish soap. Hasn't let me down yet!
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Old 15-03-2012, 14:42   #7
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Re: Cleaning the Dirtiest Waterline

Try "Shower Tub 'n Tile" by Zep. It gets rid of the ICW moustache.
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Old 15-03-2012, 14:50   #8
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Re: Cleaning the Dirtiest Waterline

have you tried On/Off? Best acid for this type of work.

that stuff is intense, but got rid of a lot of waterline nastiness on my boat
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Old 15-03-2012, 15:24   #9
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Re: Cleaning the Dirtiest Waterline

The answer is Prism Polish. Best fiberglass cleaner going, plus it's great on metal. It will take off the ICW mustache.
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Old 15-03-2012, 16:52   #10
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Try BioGreen Clean. Plant enzyme product and works great! Cleans everything on the boat and totally natural.
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Old 15-03-2012, 20:42   #11
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Re: Cleaning the Dirtiest Waterline

"ON/OFF" is a potent cleaner and will almost certainly clean your water line, but be careful with this stuff because you can also damage your gel coat. If you use it, be sure and wax the cleaned area immediately because if you don't the gel coat will re-absorb the water line funk even worse than before and it will be much harder to clean.

See On-Off Hull and Bottom Cleaner.
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