Rustoleum over POR15

[GrnRvr]

Will rattle can rustoleum auto primer adhere to por-15 rust preventative paint ok?

If I'm going with the rusty red color rustoleum, should I go with the clear por-15 or would the black be ok (and not surface to the top of the finished paint)?

 

[Splangy]

What are you painting? The POR should be topcoated according to their directions.

 

[GrnRvr]

1975 fj40 with plenty of surface rust.

And yeah, it looks like there is a few more steps than just sand, por15, prime then paint. I only want to do this once, so i will get all the prep and post por15 stuff.

 

[snobdds]

For this a good Epoxy primer is what you want. Then top coat with your paint of choice.

 

[Splangy]

For this a good Epoxy primer is what you want. Then top coat with your paint of choice.

Agreed. Unless your just doing a cheap build and using the POR on the chassis. I'm assuming you weren't planning on using it on the body, right?

 

[GrnRvr]

Well, until you put it like that...I was. Are y'all saying I need to sand then put epoxy primer then paint? No por15 on body?

 

[GrnRvr]

Btw: the newly amended plan was to fix problem spots (not entire body) with...wire brush, sand paper, marine-clean, prep-ready, por-15, tie-coat prime (and then prime the whole body with rustoleum rusty metal primer).

Where are u saying to use the epoxy primer?

Is this a bad slow rust / primer plan?

 

[snobdds]

You can basically use epoxy primer on both the frame and the body, as long as you are going down to base metal. A good epoxy primer is better in all aspects with reguard to putting new paint on a vehicle. The stuff will not allow new rust to start ever. It's easy to use and it's easy to top coat.

Por 15 is too needy of a product and it requires all "their" preps and things to complete. I've seen mixed results, to say the least.

My reccomendation, and I'm not in the business at all, is to use PPG products. Their epoxy primer is second to none.

 

[King Kong]

Ok. Great topic!

What if you are not going down to the bare metal surface on 100% of the frame?? I was going to wire wheel the frame and will end up with part bare metal surface and part with the old factory paint. Still use an epoxy primer????? OR, should I bite the bullet and pay for media blasting now that I am down to frame off??

 

[snobdds]

You don't have to be down to bare metal to use epoxy primer. You will just have some high spots where there was old paint still on, but by no means do you need to have all the old paint off.

Get all the rust off and wipe down really well...the spray away.

 

[Fast Eddy]

I wouldn't use Rusto products on anything that you're going to spend a lot of effort preparing and planning to have last a long time. They just don't get hard enough, like epoxy or automotive paint, and yes, I have used the Rusto automotive line. On my bumper I worked on it for a long time, prepped it nice and now, one season later there's rust. around some edges and bolts.