renovate house

the house im renovating is a duplex, and theres no fire wall in the attick. How do i build the fire wall, and can i use steel studs and 5/8 inch drywall, or do i have to use another material?

Repossession
property renovation

Beginning a major demolition/renovation on a property, and am hesitant about digging right in before I know which walls are structural. I don’t want the place crashing in on me.
Withough removing all the drywall so I can see the joists, how can I tell?

Sell and Rent Back