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Repainting Rusted Metal Deck


Mike Lamb
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Mike's probably talking about these steel egress stair assemblies that have proliferated in Chicago. None of them were primed correctly in the factory, they slap them up, paint them with a single coat of exterior enamel, then they subject them to foot traffic. Every winter they freeze up and tenants dump mountains of salt on them.

The one's I've seen refinished cost about $7,000 for a crappy job that'll get you a couple years, and about $15,000 for something that might last a while if they don't put salt on it.

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  • 2 months later...

Wire brush and (optionally) use The Works toilet bowl cleaner to help remove rust. Afterwards coat with Ospho https://www.google.com/#q=ospho&tbm=shop turns rust to black. Similar to POR-15, but cheaper. If you paint over it give it a few days to dry out first and do not get it on concrete as it will etch.. I learned the stupid way.

However, as others have stated it does depend on the depth of the rust.

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