I have read about paints that you can paint right over the rust like on a frame rail and was woundering if you guys woukd recomend any I know of por-15 and the stuff eastwood sell

 

a friend of mine uses rustoleum industrial primer, it stops rust. works really good and is alot easier to use then por 15, I will be using it on my truck.

 

used Por15 for my truck frame a few years back and worked great, Zero Rust is also very good and cheaper. Por fades in direct sunlight and turns faded in a short time, still works great, just doesn't look as good as it did.

If you go with Por15, use THIN coats otherwise it will bubble up, the finish looks like porceln and can be applied with a simple brush. Surface must be VERY clean and dry.

 

Where did he get the rustoleum industrial primer?

 

I've used some of the Rustoleum Industrial Paint at work for painting gates and livestock equipment. It works great.


I picked it up at a local Grainger store.

 

Well I have not used it yet but plan to and that is Rust Bullet. I see it is also one of our sponsers so I guess you can't go wrong .
I have heard it works really well.

 

how much por15 should i need to coat the frame?

keith

 

The Rustoleum ig good stuf. Just follow the instructions.

 

Don't use Rustoleum if you plan on going over it with automotive paint. It will make the stuff all lift. They aren't compatible. Any paint that thins with mineral spirits, doesn't work with auto paint.

 

Bondo, have you used Rust Bullet yet? What have you heard from others? I am curious of the outcome and how it compares to others, like ZeroRust. The description sounds very similar to ZR, except it is UV resistant and cost about double. On the other hand ZR may require 2 coats so the overall cost may be the same. These are just my impressions of the two based on their websites, I haven't used either but I am trying to pick one. Hopefully you or someone has used both and can offer a comparison.

 

rust bullet, rustoleum, zero rust are oil base paints they work good but dont use automotive paint over them

 

POR15 is an excellent product, and it's strong enough to resist chipping from road debris. However, where it is weak is when you spray it on places that water sits for long periods of time. Depressions in the top of crossmembers, the inside bottom of frame rails, etc. While it resists water extremely well, it doesn't seem to like being immersed for extended periods of time. I've always had problems with POR15 in this type of situation.

The Rustoleum industrial primer is an excellent choice - it's a lot less costly and it "gets in there" on somewhat rusty surfaces, as long as it's not flaking rust. Wirebrush or sandblast the part until "reasonable", clean off the dust, sand and debris, then paint.

As it's been said, automotive paint will not stick well to the rustoleum industrial primer, so your first coat, the base coat, should be rustoleum industrial paint. Pick a color of the limited choices that is at least close to the automotive paint you want to use, and cover the parts with the industrial paint. After it's cured, scratch it up with steel wool. Wash off the paint dust, dry, then paint over that with automotive paint of your choosing. Works very well with "house of kolor" stuff, and most of the body-shop paints I've used in the past.

Do not do this with Sikkens paint - it does not work. Peels right off in a few days...

 

frederic,
How about a couple coats of epoxy primer over the Rustoleum primer? I tried the rustoleum and it did what it said. The rust all turned black.

 

I looked at the container and what I used was called Rustoleum Rust Reformer, not industrial primer. All the rust turned black in a few days. Is this the same as the primer? Should industrial paint go over it? Thanks.