[GB49]

I have a few spots on the car that are rusting like under the backup light and near the bottom of the rocker panels.
I have cleaned, sanded, wiped and primed w/ several coats and finish coated these areas at least twice and every time the rust makes its way through the primer and the top coat and looks like crap. It takes a month or so for this to happen.
I used Rustoleum spray but I get the feeling it’s overpriced and not that good.
Is there some kind of auto primer that will adhere to the clean metal and prevent the rust from making its way through the paint?
I’m not concerned on how the finish coat looks. I just want to stop the rust. It’s like a cancer! :cussing:

Thanks,
GB49 :banghead:

 

[Gaze]

the short answer to this is "you can't stop rust."

The rust problems you are seeing exist beneath the surface of the metal and therefore come back. Rust can be prevented, or completely removed. What your doing will slow it from spreading, but unfortunately it will be near impossible to ever get rid of it all.

 

[EvilDeadFan]

You can slow it down a lot, with por15 rust prohibiting products. Or you can cut out that metal and weld in new stuff, the proper way.

 

[DScruggs]

If you think Rustoleum is overpriced I guess I should not tell you I just paid $25 for a quart of rust converter.

Tal Sol One Step by Mar Hyde

 

[D76G12]

You can slow it down a lot, with por15 rust prohibiting products. Or you can cut out that metal and weld in new stuff, the proper way.

Corroless is also a good rust inhibitor - comes from a company that specializes in marine paints. POR15 is excellent too ...

http://www.corroless.com/

http://www.por15.com/