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Old 04-07-2009, 08:54 PM
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Default removing rust stain on fiberglass

what are you guys using to remove a rust stain on fiberglass?
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Old 04-07-2009, 09:07 PM
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I've used Rust-Off with quite a lot of success, especially removing all spots that are recent. I find it gets rid of most of the really old rust but you can still see a brown shadow.
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Old 04-07-2009, 09:13 PM
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On-Off hull cleaner
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Old 04-07-2009, 09:13 PM
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Barkeepers Friend, Whink. (just used Whink today to remove a sizable rust stain in bilge). Plenty of products will work, just that I've used these with success.
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Old 04-07-2009, 09:24 PM
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Rust Aid from Home Depot. Its 8 bucks a gallon. Just spray it on and rinse it off. Star Brite makes a similar product but at a slightly higher cost
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Old 04-07-2009, 09:33 PM
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Don't waste money on name brand marine cleaners.. Just pick up toilet bowl cleaners called "The Works" or SnoBowl at your local hardware store.. 3 bucks qt then cut it 50% with water. Dab it on with a sponge and it will take rust off the 15 seconds. Don't slop it on or get it into anywhere you can't flush well or it will take a fiberglass boat apart.. It's hydrocloric acid.. Don't get it on a galvanized or alum trailer either. It works even faster to remove that scum line on the sides of your boat.. Just wipe it on with sponge. I've done all my boats at a sandbar for years to get the scum line off. Just wash it off with the water your floating in..
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Old 04-07-2009, 09:39 PM
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Quote:
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Don't slop it on or get it into anywhere you can't flush well or it will take a fiberglass boat apart..
Well that certainly makes me want to use it on my boat!
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Old 04-07-2009, 09:43 PM
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Barkeepers friend works pretty well and won't eat holes in your boat.
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Old 04-07-2009, 09:57 PM
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Sno-Bowl works like a charm, but there is a proper way to use it as is with any chemical. Wear gloves, wipe it on with a sponge and then rinse the area with water. You have to leave it on there for longer than a few minutes for it to "eat a hole".
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Old 04-07-2009, 10:16 PM
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Mr. Clean magic erasers work great for cleaning fiberglass.
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Old 04-07-2009, 10:43 PM
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Some of the rust removers contain phosphoric acid (kinda like Coke) but most use oxalic acid such as Barkeepers Friend. You can buy wood bleach (oxalic acid) and mix a very, very dilute solution to use on the boat. Comes out much cheaper than the ready mixed. You will probably never use the whole container unless you want to bleach some wood.
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Old 04-07-2009, 11:12 PM
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Quote:
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Sno-Bowl works like a charm, but there is a proper way to use it as is with any chemical. Wear gloves, wipe it on with a sponge and then rinse the area with water. You have to leave it on there for longer than a few minutes for it to "eat a hole".
Exactly,,, and Menzies all the rest marine cleaner will tell you the same thing. Anything that will remove rust stains will eat fiberglass given enough time.
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Old 04-08-2009, 05:21 AM
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I use Rust-Off but a bunch of guys that detail boats at my marina use collinite metal wax and swear by it.
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Old 04-08-2009, 05:34 AM
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Default Rust removal

Iron-Out is a great rust remover for anything from white clothes,to fiberglass decks.It's available at Home Depot,Lowes,Super markets,and Plumbing supply houses.

http://www.summitbrands.com/brands/ironout.aspx
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Old 04-08-2009, 06:08 AM
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SLX, which is designed for use on boats.
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Old 04-08-2009, 07:28 AM
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FSR Fiberglass Stain Remover
Comes in a tub and looks like blue snot.
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Old 04-08-2009, 07:34 AM
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Quote:
Originally Posted by sandy tows View Post
FSR Fiberglass Stain Remover
Comes in a tub and looks like blue snot.
I second that. It will remove rust as well as the brown water stains. Also it won't burn your skin like On/Off and is not as bad if it gets on your trailer.
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Old 04-08-2009, 07:37 AM
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I got a little bit of rust stain off my gelcoat just with 3M cleaner wax. It was a very light stain.
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Old 04-08-2009, 07:56 AM
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Wink and Barkeeper's friend on the glass....Barkeeper's on the metal.
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Old 04-08-2009, 08:03 AM
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Carefully applied snowbowl !

Barkeepers friend on NON SKID ONLY ! Very abbrasive !
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