Thanks Mickey. Sounds like Reformer or Ospho is a step up from the cold
galvanizing coatings. The rust in question is light surface stuff.
Mike NF4L
On Dec 2, 2013, at 10:21 AM, Mickey Baker <fishflorida@gmail.com> wrote:
> You have several answers, but they don't seem to answer your question
> directly.
>
> From Rustoleum's MSDS from the product,
> http://www.rustoleum.com/MSDS/ENGLISH/3575402.PDF, it appears that it uses
> tannic acid as a rust conversion compound.
>
> This is safe for consumer use and does something different than a "cold
> galvanizing" coating. It converts some of surface coat of rust (iron oxide)
> to ferric tannate, a black and more stable compound than rust. Rustoleum
> provides a wetting agent that should find all the flakes and cracks on the
> surface, particularly if it is applied thickly with a brush rather than
> sprayed. It contains paint that, when it dries, keeps the ferric tannate
> surface in place and provides a protective coat.
>
> This is intended for surface rust only.
>
> You might consider Ospho, a phosphoric acid based converter. It is a bit more
> powerful, so it acts on deeper rust than the tannic acid solutions. It would
> also require another covering coat of paint, if you don't like the mottled
> black that Ospho tends to leave behind.
>
> The "cold galvanizing" compounds should generally not be used over active
> (red) rust. Although it may successfully stop rust, it does not chemically
> address the oxides that already exist on the surface of the metal, other than
> fixing them in place. You should remove or convert the existing rust before
> coating with cold galvanizing.
>
> Hope this helps.
>
> Mickey N4MB
>
>
>
>
> On Mon, Dec 2, 2013 at 8:14 AM, Mike Reublin NF4L <nf4l@comcast.net> wrote:
> Anybody got an opinion about Rustoleum Rust Reformer vs cold galvanizing?
> Would you use it with cold galvanizing, or alone?
>
> 73, Mike NF4L
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> --
> Mickey Baker, N4MB
> Fort Lauderdale, FL
> “Tell me, and I will listen. Show me, and I will understand. Involve me, and
> I will learn.” Teton Lakota, American Indian Saying.
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