water rust stain - Page 2 - Fiberglass RV


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Old 06-03-2006, 08:37 PM   #15
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Trailer: Burro 1982 13 ft
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Per, I have lint in there.

I just removed some rust from the INSIDE glass on my burro. I used a VERY fine grit sanding sponge. I just wiped it across, applying no pressure. I was suprised the gloss stayed intact.

I was willing to put up with a matt spot, but the stain had to go. No worse for the cleaning! Alls well.
Now that's a neat idea! A fine grit sanding sponge. Never heard of it before. Am discovering lots of great things on the forum.
Thanks.
Dorie
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Old 06-03-2006, 08:38 PM   #16
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Chemistry! The iron oxide penetrates the gelcoat -- Use a product like Naval Jelly or stuf from Home Depot that contains iron oxide-eating acid to get in there and eat the IO without damaging the gelcoat (Rust stains tend to come back in the same spots).

Swimming pool acid works fine except that you have to be VERY careful to keep the acid off any metal parts or it will eat them also -- Keep a water hose running and rinse everything down three times -- Use safety precautions for eyes and skin!!!
Now I did not know any of that. Thanks for the info.
Dorie
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Old 06-05-2006, 07:31 AM   #17
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I had rust stains on our Scamp door and a few places on the side of the cabin. I used a powdered rust remover intended to remove rust from driveways... available in the plumbing section of Lowes/Home Depot. Make a thick paste of the stuff and apply to the stain. Takes about 15 min. to work (reapply if really terrible stain). No rubbing so no abrasion of the gel coat. If the fitting can't be replaced with stainless- clean it to bare metal, mask and paint with a 95% zinc primer (available at auto stores and most hardware stores). I did this a year ago to a couple of offending fittings and no rust since.
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Old 06-27-2006, 07:22 PM   #18
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Trailer: 1997 13 ft Scamp Deluxe and 2006 Airstream 75th Anniversary International Bambi Prototype
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Hi there....


This is NOT that hard of a situation. No need to mess with all these chemicals.


Go to Wal-Mart, go to the camping/boat section, purchase 3m "Marine Fiberglass Restorer" in the white bottle. Rub it on the rust gently, and it instantly goes away. Its also the only easy product to use to remove oxidation on fiberglass. You can leave it as is as it contains wax, or you can coat it with Nu-Finish from Wal Mart depending on if you want a mirror finish. Nu-Finish alone will remove the rust, but you have to really polish as its not that abrasive. Nu-Finish after the 3m product will make the exterior look better than new. Its SIMPLE.
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Old 07-01-2006, 08:29 AM   #19
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We have a lot of iron in our well water and have used Iron Out to remove the stains from our bath tub and washing machine. The washing machine has both plastic and metal areas where the rust accumulates, Iron Out works every time. I've picked it up at Home Depot and Canadian Tire.
The stuff I used was the same as used to remove rust stains from a driveway (also works great in sinks and toilets). It's a powder you can pick up at Lowes/Home Depot. Make it up as a paste and apply to the stain. Rinse the stuff off in about 15 min. Re-apply if necessary. I then masked and painted the offending fitting with 95% zinc primer and no additional problem now for two years (best would be replace with stainless steel if you can find the fitting).
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Old 07-08-2006, 09:32 PM   #20
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Dorie,
When we got our '99 Scamp in 2002 it had been outside for 3 years and had a unsightly rust stain down the door,from the hold back hardware.We removed the hardware and tried everything to get the rust stain out.Finally heard about Rustolium (?sp) Rust Stripper on this site or Yahoo Scampers. I must say it worked like magic!
There is another product called Rust Remover by the same company,but I had no need for that after using the Stripper and don't know if it would work.
Hope this info isn't too late to help you!
Tony
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Old 07-09-2006, 06:30 PM   #21
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Some inconsiderate person put cigarette burns on the fibreglass countertop, before I got the trailer.
Does some kind person know how to get those stains off ?
I am scared to sand it, as it will ruin the shine, and it still might be stained, and the finish would be ruined, too.
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Old 07-18-2006, 06:21 PM   #22
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I went to walmart today and found this stuff that is used for marine hulls, boy does it work good! It is made by Starbrite and is a marine hull cleaner. It will take of black streaks, seaweed stains, rust and all sorts of things and it is safe for fiberglass. We used it on our Uhaul and it worked GREAT! Just thought I would pass this along, it sure sold me. After we cleaned it with this we washed it good with our rv wash then we are going to use 303. Maggie
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Old 07-18-2006, 07:43 PM   #23
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Trailer: Escape 5.0 TA, 2014
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Some inconsiderate person put cigarette burns on the fibreglass countertop, before I got the trailer.
Does some kind person know how to get those stains off ?
I am scared to sand it, as it will ruin the shine, and it still might be stained, and the finish would be ruined, too.
I don't think it's a stain Penny...bet it's a burn. Not much you can do except sand it down and repair. Fiberglass is not as forgiving as wood when it comes to heat.

Anyone have any ideas
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Old 09-16-2009, 03:46 PM   #24
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Muriatic acid removes rust stains on fiberglass with no harmful effect. Don't get it on anything else. It will make good stainless steel rust.
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