Fire Wall

[Mel K.]

Hello Everyone,

I am interested in purchasing a duplex that does not have a firewall in the attic. What would I need to have done to get it installed? Would I need an architect/engineer evaluate the property before installation? Is the process in putting up a firewall more involved than putting up regular drywall? The property is in Florida and is single story. Any advice would be appreciated. Thanks!

[Miles Rivas]

Hey Mel,

I am a homebuilder in MD and we have to install "core wall" or fire rated drywall in the attic separating the units.  We use metal "C" tracks and "H" tracks to frame up the support to hold the fire rated drywall.  You have to use metal screws and also a break away L bracket to screw the metal tracks to the lumber in the roof.  The idea is that if a fire breaks out in one unit, the clips burn and break away from the drywall so that the house on fire can burn and fall away without affecting the other unit.  See my chicken scratch below.  Let me know if you have any other questions...im not the best explaining it on this.