Does Hammerite Need Primer?

Hammerite metal paint is a really popular paint, particularly as a protective, anti-rust paint. If you are using it for the first time you may well be wondering does Hammerite need primer? Well, there is one way to know for sure. I got some really rusty metal and some Hammerite and got to painting, with and without primer and tried to see if it made any difference.

Does Hammerite Need Primer?

No, it does not. Hammerite metal paint is a direct to rust paint and does not need a primer. There are some surfaces where a special metals primer is advised.

Direct to rust

Hammerite paints are designed to be painted direct onto rust without a primer. Before painting you need to remove any loose rust, a wire brush is brilliant for this, and maybe give it a clean. But you do not need to prime the surface.

This holds true for most non-galvansied metals, if the metal you want to paint is galvanised then Hammerite sell a special paint for galvanised surfaces. They also offer a special metals primer which you can use then paint on top with any Hammerite paint.

Rusty piece of metal to be painted
Rusty piece of metal to be painted

Just to show how direct to rust Hammerite can be I decided to paint the sample above.

The Section on the right had been sanded to remove the really big chunks of rust whereas the section on the right has not been touched at all.

Painted With Hammerite
Painted With Hammerite

Now I have painted that same sample with Hammerite direct to rust paint, the paint is the smooth finish version.

Then I allowed this sample plenty of time to fully cure before moving it outside to my sample are where it will live for the next few years.

Direct to rust test outside
Direct to rust test outside

Special Metals Primer

Hammerite Special Metals Primer is a water-based primer to promote adhesion to stainless steel and non-ferrous metals including galvanised, aluminium, chrome, brass and copper.

Rust Beater Primer

Hammerite No.1 Rust Beater provides a high build finish to heavily pitted areas of rust and prevents new rust forming. This rust proofing product kills rust, primes and undercoats all in one.

This primer is really useful for really bad areas and areas where you dont want rust to have any chance of coming back.

Hammerite Rust Beater Tin
Hammerite Rust Beater Tin

Here you can see a tin of the rust beater primer, this is nice, thick stuff that has great coverage.

Painting Rusty Metal With Rust Beater
Painting Rusty Metal With Rust Beater
Painted With Rust Beater
Painted With Rust Beater

And above you can see the primer once dired. it covers the rust really well and provides a much better surface to then paint on top of.

The Rust beater Painted Over With Hammerite Smooth
The Rust beater Painted Over With Hammerite Smooth

This is the same primed sample nowe painted over with hammerite smooth.

Photo of author

Sam Wood

Wood by name, wood by nature. I am a fully qualified, time-served, award-winning joiner with an NVQ Level 3 in Carpentry and Joinery as well as an HNC in Construction. Beyond my joinery qualifications, I have also earned a degree in building surveying. I believe these qualifications make me perfectly positioned to provide expert advice on many different areas of DIY as well as share all of the tips I have picked up in over a decade working on building sites!

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