Re: My basement rebuild
Reply #70 –
I use phosphoric acid on corroded aircraft aluminum, alcoa wheels, rusty steel. It may be necessary to constantly brush it on as it's not that strong but I try to wear gloves. https://www.homedepot.com/p/reviews/Klean-Strip-1-Gal-Concrete-Etch-Metal-Prep-Rust-Inhibitor-GKPA30220/100406369/5. Ospho is also contains phosphoric acid and great to prep surfaces for a primer or paint. Amazon.com: Ospho 605 Metal Treatment: Home Improvement
This is for light rust. Heavy rust needs mechanical removal.
Good but out of date primers can be found online from Boeing. Deft is one of the companies that produce it.
Muratic Acid has some really nasty vapors and don't recommend it.
Pierce
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