Safe drywall temps

[firefighterjake]

Zombie thread ... but a good one as this seems to be asked every so often.

 

[NVHunter]

Can you texture Duroc and paint it to look like a normal drywalled wall?

Would putting Duroc up with a one inch airspace allow for decent protection? Or does it need a stone or tile over it?

 

[begreen]

Durock could be used raw and still provide good protection. It's the 1" open, ventilated air space behind the non-combustible shield that is doing most of the work. A stucco coating may work if it bonds well to the cement board.