what do you cover welds with?

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Scott
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what do you cover welds with?

Postby Scott » Mon Sep 15, 2014 8:17 pm

Hi all,

The 86 i bought had some welding done to it, and in the trunk the welds were not painted or covered in anything, and have a rusty look to them. What are you supposed to cover/paint/slather on welds to keep them happy?

i'm tempted to spray some rustoleum on it, or grease it up, but i don't trust my instincts on this one. I like to bolt things together, not melt them together.

Thanks
I wish my car had winter mood technology.

DeLorean
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Re: what do you cover welds with?

Postby DeLorean » Mon Sep 15, 2014 9:03 pm

http://www.nationaltoolwarehouse.com/Fa ... oCnLrw_wcB

Also, weld-through primer is not a bad idea, but too late for that. After that, shoot it with self etching primer and top coat it with what ever sort of paint you want.
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Geoff
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Re: what do you cover welds with?

Postby Geoff » Tue Sep 16, 2014 12:07 pm

3M Fast and Firm sucks. Too many solvents and not enough elastomers means that it dries quickly, hardens, and cracks resulting in pathways for moisture. Their All-Around Autobody Sealant seems much better.
If you have rust on the welds I'd paint it [url]with http://www.eastwood.com/rust-encapsulator-28601.html[/url] then chose to topcoat if you wish.
The kind of dirty that doesn't wash off :eyebrows:

KoogiA17
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Re: what do you cover welds with?

Postby KoogiA17 » Wed Sep 17, 2014 6:49 am

If the rust is quite bad you can cook up a thick rust remover with some citric/phosphoric acid and cornstarch and paint that on. Otherwise rub down / wirebrush the rust.
Coat with a decent epoxy primer of the type suggested by Geoff. (I have a massive tin of Jotun Jotamastic 87 as my epoxy primer of choice).

You can also apply a decent brushable seam sealant on top of the epoxy.

Apply a topcoat.

Scott
Posts: 240
Joined: Mon Oct 18, 2010 3:33 pm
Number of Saabs currently owned: 3

Re: what do you cover welds with?

Postby Scott » Wed Sep 17, 2014 10:23 am

I have to look closer, it looks to be some surface rust on the welds.

Thanks for the comments all.
I wish my car had winter mood technology.


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