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Sorting rusty box steel.

WIAWSNB · 2025-11-14 20:41:54

Hi. Box section steel sections, with extensive, but surface, rust. I'll be wire brushing to get rid of all loose stuff, but what then? What are the latest solutions? Used to be things like rust 'converter', which supposedly turned rust into an inert and hard compound, ready for painting over. Any good? Any recommendations?…

Comments

Ectophile Posts: 8,145 Forumite

15 November at 1:36PM

I was using Kurust to try to stop a car rusting away in the late 1980's. It's been around for donkey's years.
It looks like milk. Scrape away any loose rust, then paint on the Kurust (be careful, it runs easily). Any remaining rust turns to a hard purply-black film. You can then paint over it.

If it sticks, force it.
If it breaks, well it wasn't working right anyway.
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