Hi all, i have a roof strucutre that wasnt primed / undercoated incorrectly and all the paint is flaking off the Galvanised metal. Not sure what to do as it will be a huge job to grind off all residual paint. Is there some paint product i can reapply over the top or do i need to strip everything back to bare metal and start again?
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@diyhack from your photo, the rust seems fairly minor, here are some links from the White Night's Rust Guard line:
On the Rust Converter page, click the How To Apply tab above the photo, for a brief guide.
Late note: Sorry guys, I didn't know Brad had posted until after I'd submitted.
Yep, you need to get the paint off @diyhack. A wire brush should do the trick.
When it comes to priming and repainting, you might want to try the spray cans - can be quick and easy.