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Old 04-05-2021, 06:47 AM   #1
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1979 24' Airstream Excella 24
Middleburg , Virginia
Join Date: Dec 2020
Posts: 13
Removing spots on aluminum

How do we get rid of this? Have tried Alumabright. This is the result. It had slight improvement. Would prefer not to polish and obtain a satin finish.
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Old 04-05-2021, 06:53 AM   #2
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2003 25' Classic
Zanadude Nebula , Milky Way
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Welcome Aboard👍

Quote:
Originally Posted by T1DMcure View Post
How do we get rid of this? Have tried Alumabright. This is the result. It had slight improvement. Would prefer not to polish and obtain a satin finish.
This has worked for us. Used a 6" Porter Cable random orbital polisher and a damp foam pad.

Ck out all Griot's products, been using them for years, 1st rate with great CS.👍



Bob
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Old 04-05-2021, 06:55 AM   #3
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1979 24' Airstream Excella 24
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Just added photos. Thank you. They look like large drip spots all over.
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Old 04-05-2021, 07:02 AM   #4
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1979 24' Airstream Excella 24
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Any idea what the drip spots are?
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Old 04-05-2021, 07:23 AM   #5
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1979 24' Airstream Excella 24
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Thanks for the detailed info Bob. We have an orbital polisher. So can give that a try. The drip marks line up with the rivets.
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Old 04-05-2021, 07:31 AM   #6
CLOUDSPLITTER "Tahawus"
 
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On our Classic these were caused by the deterioration of the white roof coating AS uses.
I've used the One Step for assorted light blemishes on the AS panels.

Bob
🇺🇸

I did 'Green Scotch Pad' the roof to help reduce it.
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Old 04-05-2021, 07:40 AM   #7
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1979 24' Airstream Excella 24
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Our roof is not white, though. The Griot product you mentioned says it is a sealant. We are only at the stain removal stage.
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Old 04-05-2021, 07:51 AM   #8
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I’m contemplating ceramic coating the AS, any thoughts...is it worth it?
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Old 04-05-2021, 07:53 AM   #9
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Have you removed the clearcoat?


Kay
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Old 04-05-2021, 08:45 AM   #10
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1979 24' Airstream Excella 24
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Kay, we tried stripping it and nothing came off. Perhaps clear coat was removed by previous owner.
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Old 04-05-2021, 11:58 AM   #11
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What has worked well for us is using WD40 on a 2020 25' AS Int. There are some who are not in favor of using WD40 but it has worked well not only to remove stains like hard water spots and dirt streaking but also to give the AS skin and good protective coat. If it was good enough for NASA, then I'm all in ! I only hand rubbed it in being careful to follow the grain direction wherever possible. Yes it is a lot of extra work but looks good afterwords. There are a lot of opinions out there I'm sure !
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Old 04-06-2021, 12:13 AM   #12
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air_999,
How long have you used the WD40 on the aluminum? I've always done the stainless rock guards with WD and it always looks sharp. Didn't think it was good on aluminum.
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Old 04-06-2021, 05:43 AM   #13
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1979 24' Airstream Excella 24
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I've never heard about using WD40. Most likely something very acidic or basic make the streaks in our aluminum.
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Old 04-06-2021, 05:43 AM   #14
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air 999 - do you use the regular WD 40 or the silicon-based WD 40?
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Old 04-06-2021, 06:21 AM   #15
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[QUOTE=T1DMcure;2480142]I've never heard about using WD40. Most likely something very acidic or basic make the streaks in our aluminum.[/QUOTE



Regular WD-40 on stainless...also good for removing bugs on the panels.

STREAKS...first determine are they on or in the aluminum.
If the panels have the ALCOA factory coating it's most likely a surface concern and light buffing with a mild product is in order.
No clear-coat and the damage will most likely need to be polished out.

Bob
🇺🇸

WD40 on the segment protectors, Griot's One Step on the rest,(POI trying Griot's 3in1 Ceramic this Spring)
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Old 04-07-2021, 09:15 PM   #16
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Regular WD40. Works well with no harm. I read several posts on this just shortly after we purchased our AS back let July 2020.
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Old 04-07-2021, 09:17 PM   #17
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Quote:
Originally Posted by FlyingCloud7 View Post
air_999,
How long have you used the WD40 on the aluminum? I've always done the stainless rock guards with WD and it always looks sharp. Didn't think it was good on aluminum.
We bought our AS last July 2020. I have hard water where I live and where I wash the AS, one in the same place. I have used the WD40 three times now, covering the entire AS except for the roof. It always gets rid of the streaks and hard water spots. Always use a soft cloth (not towels) and I spray the cloth not directly onto the AS surface.
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Old 04-08-2021, 04:49 AM   #18
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1979 24' Airstream Excella 24
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Good info. Thank you!
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Old 04-08-2021, 04:50 AM   #19
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1979 24' Airstream Excella 24
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Good suggestion. We will try it.
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Old 04-11-2021, 09:27 AM   #20
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What are your rivets made of, also alloy ?
Its posible that the aloy plate oxidises at the holesvof the rivets and residu is dripping by rainfall over the aloy plates.

Orbis every AS owner having these stripes.
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