Rust resistant coating

[A K]

I was told that powder coating paint is very good for rust resistance.

But from what I read, that kind of paint requires heat.

Is there something else that will provide excellent rust resistance for metal?

Thanks, Andy

[Thomas]

Rustolium. Just pianted my fence. I expect 10 years or till I die.

[Ed Pawlowski]

Powder coating requires oven baking to about 400 degrees.

Good paint, like Rustoleum will get you years of service. Prep is critical for a good job so take your time.

[dpb]

What's it going on? New or old work? One of the zinc converters first if old work will help.

[Dean Hoffman]

We used instant cold galvanizing at work years ago. My bosses liked it because it was cheap and available locally. Quality? I really don't remember and had nothing to compare it to. Lots of products pop up in a search for corrosion resistant coatings.

[Andy]

I will be going on my bicycle frame and some bolts.

Andy

[Dean Hoffman]

Would it be worth tearing down and to an auto body shop?

[trader_4]

If there is no existing rust, Rustoleum should be fine. If there is existing rust, Rustoleum and probably others have primer made for rusty areas, but it's far better to get it down to bare metal. However might not be that easy to do in tight areas, uneven spots like welds, etc.

[Bob F]

I used Hammerite on a huge outdoor hinge I made, and it is still fine after 20 years. Nice looking too.

[L Thorpe]

You may want to consider aluminum paint, which contains metallic aluminum flakes. This paint is especially good for fences.

The only possible drawback is that the coating is always bright silver. On a fence the bright silver coat is not unnatural.

[Clare Snyder]

Powder coating CAUSES rust if the film is broken allowing moisture in under the coating. A good cold galvanize or high zinc epoxy primer is MUCH better than powder coat.

[invalid unparseable]

Years since I saw auto-body processes. Only difference I see today is more environmentally friendly paint:

Metal prep was most important and sometimes one sided galvanized was used as apparently 2 sided is harder to weld. I recall Renault talking about hot dipping the whole welded body.

For a bicycle I'd sand down to bare metal and prime with a Rustoleum and final coat on whole bike.