Grand Designs

[Bazile]

It's always interesting watching folk build unconventional homes

Just watching one now being built out of shipping containers

I've watched this type of build before .
I don't recall the containers being treated for rust .

Don't they require said treatment ?

[douglas9401]

This might be of interest.

https://www.discovercontainers.com/shipping-container-home-rust-and-corrosion-treatment/

[Buenchico]

Shipping containers are made from corten steel
https://en.wikipedia.org/wiki/Weathering_steel
so they have a certain degree of rust prevention built into them.

However it's still a factor that needs to be considered when converting them for residential (or commercial) use:
https://caddetailsblog.com/post/how-should-i-protect-my-shipping-container-home-from-rust