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Thread: Water stains
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10-31-2017, 07:38 PM #1Team Member
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Water stains
Our lake has a lot of limestone, so I expect the water stains on my J Craft are calcium.
What is the best way to clean these off? It's probably a task for spring, but I can think now.
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11-01-2017, 07:22 AM #2Screaming And Flying!
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What color are the hull stains? If white, it is just calcium and some CLR cleaner should remove them. A polishing job and wax coat would reseal the gell and help for easier removal next year.
83 V-King, 96 Mariner, 200 hp ff block 2.5 w/a 28p choppa
We gotta clean this liberal mess up, VOTE TRUMP TO MAGA!
Rebuild thread:
http://www.screamandfly.com/showthre...-it&highlight=
http://www.screamandfly.com/showthre...cs.&highlight=
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11-01-2017, 07:46 PM #3Team Member
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Is CLR safe for gelcoat?
thanks
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11-02-2017, 07:49 AM #4
Yep I've used it for years also works on all your external hardware like jackplate, mid and cowl.
Basicly anything coated with hard water calcium.
Key is to rinse well and rewax polish it all.
Really stubborn hard water buildup or worse can be cleaned
With muriatic acid ....mix 50/50 water acid and wipe her down
Again rinse and wax.
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loop liked this post
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11-03-2017, 09:25 AM #5
a little more extreme than your project but this may ease your concerns about acid on gelcoat.
muriatic acid works and is cheap
this boat spent 6 months sitting in brackish water
I used it full strength and no harm to the gelcoat.
sprayed it on DRY hull (thats important because water will immediately dilute the acid and render it useless),let it work about 10 min,lightly scrape off loose stuff, rinse,dry with a leaf blower and repeat as necessary. Very little effort required.
just keep the acid off anything aluminum,galvanized or your driveway. Cleans stainless nicely too
took several hours but was well worth itLast edited by loop; 11-03-2017 at 09:36 AM.
limited skills
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11-03-2017, 04:24 PM #6
I worked in a hardware store years ago and noticed boat hull cleaner had muriatic acid in it. So I avoided the $10/250 ml for hull cleaner and started buying the straight acid, that's all I've ever used since. Much cheaper and you can mix at your own strength. Always end with a good rince though
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11-03-2017, 10:18 PM #76000 RPM
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Always wear eye protection and respirator. Be careful if it is a windy day.
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11-12-2017, 04:07 PM #8Team Member
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Spring now. The outside water has been turned off. Thanks for the suggestions.
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11-12-2017, 04:14 PM #9Screaming And Flying!
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Wash with fresh right behind the acid wash
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11-12-2017, 06:35 PM #10
is gone
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