Primer or not.

Elmer48 · Nov 20, 2022

I am getting ready to paint a 48 Super A. I have purchased rust oleum IH red. I have read conflicting suggestions on whether to use primer or not. I would think that it definitely should be used. The argument against it is that the anti rust properties of the paint work better when they are in contact with bare metal. Any help ? Thank you.

glennster · Nov 20, 2022

if you are looking for a corrosion protection primer, look at something like ppg omni system, the mp 170 is a good value line primer. the go
over it with a surfacer and block sand before color coat
mp 170

Stephen Newell · Nov 20, 2022

With metal you are better off using a primer with most paints. Unless it says direct to metal it needs primer for adhesion purposes.

Elmer48 · Nov 20, 2022

Thanks for the advice. It looks like it will be primed.

Stephen Newell · Nov 20, 2022

If you really need rustproofing then apply an epoxy primer first and then put an alkyd primer over the top. With most primers if the paint is scratched down to the metal rust will start
at the scratch and spread outward under the paint. With an epoxy primer if scratched down to the metal it will rust at the scratch only. The enamel paint you are using won't adhere as
well to epoxy primer as it will to an alkyd primer so it would help to double prime.

Duner Wi · Nov 21, 2022

From the Rust O Leum web page

For Best Results

For maximum protection, top with any Rust-Oleum Stops Rust coating.

showcrop · Nov 21, 2022

I hope that you have not put much time and effort into your prep.

JD Dave · Nov 21, 2022

You should follow the instructions of the paint manufacturer regarding the recommended products and procedures. Most of this information is online.

Primer or not.

Elmer48

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glennster

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Stephen Newell

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Elmer48

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Stephen Newell

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Duner Wi

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