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[GMCnet] Window Trim Aluminum Corrosion [message #189619]

Thu, 08 November 2012 11:49

enate98690

Messages: 23
Registered: January 2012

Karma: 0

Junior Member

Hi,
I noticed that the black, aluminum window trim on my 1973 GMC was very rough (to the touch) in a variety of places and also appeared to have almost a kind of mold or fungus on it. In fact, it was merely aluminum corrosion.

I took white distilled vinegar and brushed in on both the inside and outside sections that had the corrosion. I left the vinegar on overnight and rinsed with water in the morning.

I got fantastic results. Most or all of the corrosion was removed but the remaining black paint was undamaged. I'm sure another application will remove any remaining corrosion. All I need to do then is a light sanding and then apply new flat black paint.

I found this a great alternative to removing and replacing the window trim and hope you find it as helpful as I did.
Thanks!
Keith Lee
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Re: [GMCnet] Window Trim Aluminum Corrosion [message #189623 is a reply to message #189619]

Thu, 08 November 2012 12:31

Harry

Messages: 1888
Registered: October 2007
Location: Victoria, BC CANADA

Karma: 3

Senior Member

I sprayed the passenger window trim. I put some ordinary primer on then flat back. It looks good.

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Re: [GMCnet] Window Trim Aluminum Corrosion [message #189624 is a reply to message #189619]

Thu, 08 November 2012 12:47

emerystora

Messages: 4442
Registered: January 2004

Karma: 13

Senior Member

When you repaint be sure to use primer that is meant for aluminum. If you cant find it at Ace or a home store you can buy it at automobile paint shops

If you use ordinary primer or no primer you will find that the paint will eventually peel.

Emery Stora
77 Kingsley
Frederick, CO

On Nov 8, 2012, at 10:49 AM, enate98690@mypacks.net wrote:

> Hi,
> I noticed that the black, aluminum window trim on my 1973 GMC was very rough (to the touch) in a variety of places and also appeared to have almost a kind of mold or fungus on it. In fact, it was merely aluminum corrosion.
>
> I took white distilled vinegar and brushed in on both the inside and outside sections that had the corrosion. I left the vinegar on overnight and rinsed with water in the morning.
>
> I got fantastic results. Most or all of the corrosion was removed but the remaining black paint was undamaged. I'm sure another application will remove any remaining corrosion. All I need to do then is a light sanding and then apply new flat black paint.
>
> I found this a great alternative to removing and replacing the window trim and hope you find it as helpful as I did.
> Thanks!
> Keith Lee
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
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Re: [GMCnet] Window Trim Aluminum Corrosion [message #189651 is a reply to message #189619]

Thu, 08 November 2012 17:19

JohnL455

Messages: 4447
Registered: October 2006
Location: Woodstock, IL

Karma: 12

Senior Member

SEM makes a trim paint that is the right "BLACK" and finish gloss number to use. Also it's tough stuff. Or Marhyde makes "Satin Black Trim Coating" but I find it not quite as durable. Both are in rattle cans at a real auto parts store.

John Lebetski
Woodstock, IL
77 Eleganza II

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Re: [GMCnet] Window Trim Aluminum Corrosion [message #189672 is a reply to message #189624]

Thu, 08 November 2012 20:05

USAussie

Messages: 15912
Registered: July 2007
Location: Sydney, Australia

Karma: 6

Senior Member

Emery,

The aluminum primer used by the aerospace industry is zinc chromate, I discovered that you can no longer buy zinc chromate spray
paint in rattle cans here in Australia. Don't know if that's true or not in the USA.

Regards,
Rob

-----Original Message-----
From: Emery Stora

When you repaint be sure to use primer that is meant for aluminum. If you cant find it at Ace or a home store you can buy it at
automobile paint shops

If you use ordinary primer or no primer you will find that the paint will eventually peel.

Emery

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Regards, Rob M. (USAussie) The Pedantic Mechanic Sydney, Australia '75 Avion - AUS - The Blue Streak TZE365V100428 '75 Avion - USA - Double Trouble TZE365V100426

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Re: [GMCnet] Window Trim Aluminum Corrosion [message #189675 is a reply to message #189619]

Thu, 08 November 2012 20:18

Mr ERFisher

Messages: 7117
Registered: August 2005

Karma: 2

Senior Member

great find

thanks

gene

On Thu, Nov 8, 2012 at 9:49 AM, <enate98690@mypacks.net> wrote:

> Hi,
> I noticed that the black, aluminum window trim on my 1973 GMC was very
> rough (to the touch) in a variety of places and also appeared to have
> almost a kind of mold or fungus on it. In fact, it was merely aluminum
> corrosion.
>
> I took white distilled vinegar and brushed in on both the inside and
> outside sections that had the corrosion. I left the vinegar on overnight
> and rinsed with water in the morning.
>
> I got fantastic results. Most or all of the corrosion was removed but the
> remaining black paint was undamaged. I'm sure another application will
> remove any remaining corrosion. All I need to do then is a light sanding
> and then apply new flat black paint.
>
> I found this a great alternative to removing and replacing the window trim
> and hope you find it as helpful as I did.
> Thanks!
> Keith Lee
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
>

--
Gene Fisher -- 74-23,77PB/ore/ca
�Give a man a fish; you have fed him for today --- give him a URL and
-------
http://gmcmotorhome.info/
Alternator Protection Cable
http://gmcmotorhome.info/APC.html
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Re: [GMCnet] Window Trim Aluminum Corrosion [message #189680 is a reply to message #189675]

Thu, 08 November 2012 20:47

tphipps

Messages: 3005
Registered: August 2004
Location: Spanish Fort, AL

Karma: 9

Senior Member

Zinc chromate in spray cans are on Amazon. Also, suggest marine supply house, if one is near you.
Tom, MS II

2012 Phoenix Cruiser model 2552 KA4CSG

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Re: [GMCnet] Window Trim Aluminum Corrosion [message #189690 is a reply to message #189672]

Thu, 08 November 2012 22:41

emerystora

Messages: 4442
Registered: January 2004

Karma: 13

Senior Member

On Nov 8, 2012, at 7:09 PM, Rob Mueller wrote:

> Emery,
>
> The aluminum primer used by the aerospace industry is zinc chromate, I discovered that you can no longer buy zinc chromate spray
> paint in rattle cans here in Australia. Don't know if that's true or not in the USA.
>
> Regards,
> Rob
>
>

I am familiar with zinc chromate and if I were using large panels of raw aluminum I would probably use it but for the window trim I have had great success with SEM Self Etching Primer. It comes in a 15.5 oz. spray can. The can says "adheres to autobody steel, aluminum and stainless steel."

Then I use SEM 39143 Original Trim Black which comes in a 13 oz. spray can.

These are products that Jim Bounds has used and I first purchased them from him a few years back.

Emery Stora
77 Kingsley
Frederick, CO

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Re: [GMCnet] Window Trim Aluminum Corrosion [message #189734 is a reply to message #189619]

Fri, 09 November 2012 12:14

enate98690

Messages: 23
Registered: January 2012

Karma: 0

Junior Member

Hey!
I'm glad it was helpful. It really helped out the inside where close spaces, etc make successful heavy sanding difficult.
Keith

-----Original Message-----
>From: "David H. Jarvis" <jarvis210@shaw.ca>
>Sent: Nov 8, 2012 10:31 AM
>To: gmclist@temp.gmcnet.org
>Subject: Re: [GMCnet] Window Trim Aluminum Corrosion
>
>
>
>I sprayed the passenger window trim. I put some ordinary primer on then flat back. It looks good.
>
>
>--
>"I've always been crazy, but it kept me from going insane"
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