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Old 05-13-2011, 12:38 PM   #1
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Corrosion

HAPPY FRIDAY 13TH.



Extensive Corrosion: We returned to our home in Montana in mid December when the temperatures were below zero. To back the trailer into its garage we first had to have the drive plowed. It snowed the next night so I couldn't remove it for washing. What's more this was a rough winter with snow and cold persisting. Moreover I had no idea that the dust covering the trailer resulting from our driving the winter roads contained a corrosive material. If I'd suspected as much I would have figured out a way to wash it.

Apparently, however, Montana does use a chloride and the pictures show what the trailer looked like several days ago when we could finally get the trailer out of its garage and wash it. Since washing I've tried everything (polish etc) to remove this white "rust" but nothing works. Does anyone have a solution?


I intend to contact my insurance company but first I have to know what my options might be. If I can't buff out the corrosion, should I replace panels or is it possible someone can restore the finish?



Since buying our trailer in 2005 we've maintained it so it is immaculate. Bottom line we'll spend to get it fixed, but first hope someone might have thoughts about repairs.



Bert Gildart


NOTE: We will never drive through Montana (my home state) again in the winter.
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Old 05-13-2011, 12:57 PM   #2
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Bert, that's filiform corrosion. It's under the clear coat finish and won't come off by polishing unless you remove the surface finish.
These sites will explain some KSC Corrosion Technology Laboratory -- Filiform Corrosion
http://www.argentumsolutions.com/wik...form_Corrosion
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Old 05-13-2011, 01:05 PM   #3
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If that's filiform corrosion, that's as bad as I've ever seen. I'd like to see some close-ups.
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Old 05-13-2011, 01:50 PM   #4
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Bert, So sorry to see your corrosion. Larger images can be uploaded to a maximum of 1600 pixels.

See the main and extensive thread on filiform corrosion:
Corrosion problems with new Airstreams

Good luck with this.

-- Bill
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Old 05-13-2011, 03:08 PM   #5
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Larger photos

Several readers have asked to see larger photos. Hope I've done this right, this time.
Bert
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Old 05-13-2011, 03:09 PM   #6
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That's filiform alright.
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Old 05-13-2011, 03:16 PM   #7
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Oh, man! I am so sorry to see this amount of filiform attacking your Airstream. What a shame. It scares me. Good luck in resolving it. Please keep us posted.
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Old 05-13-2011, 03:18 PM   #8
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Wowsers! If that was anywhere else than the coach, it would be a living, breathing, thing of beauty, much like hoar frost.
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Old 05-13-2011, 06:52 PM   #9
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Thanks Bert for your larger pictures...

Just wish I was looking at your beautiful Glacier National Park photos instead of this dreadful filiform corrosion.
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Old 05-13-2011, 06:57 PM   #10
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I suspect the clear coating reacted with the road salts - - I believe the fix is to strip the clear coat and compound that out - at least thats what I would do before replacing panels - the not so good news is I would do it pretty quick before it gets worse.......

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Old 05-13-2011, 06:58 PM   #11
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Can anyone explain to me how the filiform happens in an area without a seam? Is it just crummy clear-coat?
Hard to believe road salt did it; and if it did, what the heck is AS up to? We've blasted through a ton of salty roads over the years and have had no filiform critter problems.
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Old 05-13-2011, 07:22 PM   #12
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I suspect all it takes is a nick or weakness in the coating for the road salt to get underneath it......

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Old 05-13-2011, 09:12 PM   #13
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I must have had a lot of nicks then because this stuff was thick not just on the panel shown in the photos, but rather on two more in the front and three more in the back.
Any suggestions where someone in Montana might start looking for repairs?
Thanks!
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Old 05-13-2011, 09:20 PM   #14
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Quote:
Originally Posted by Shacksman View Post
Bert, that's filiform corrosion. It's under the clear coat finish and won't come off by polishing unless you remove the surface finish.
These sites will explain some KSC Corrosion Technology Laboratory -- Filiform Corrosion
Filiform Corrosion - JAMWiki
If its filiform corrosion: something would have to break the coating first.
I would like to know if it is on the surface or under the coating. I have towed through MT in the winter and never had a problem.
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