Steel studs on back wall double studs or single

[Leroy_B]

Building the back wall for my wood stove which I to attach cement board and stone veneer. The steel studs when used for regular construction building a wall the studs are used singularly which is naturally common sense....ok. But when building the back wall should I double up the studs to accept the weight of cement board, veneer mortar and a field stone style of veneer? Also should the the steel studs be secured where I'd have about an 1 1/4 space as to the other way with the stud allowing a 2 3/4 space. I know a min. of 1" is required space and was also informed that not to use a long screw that would secure the cement board and studs into the wall of the room it's being installed due to heat transferred to the homes original wall structure.

 

[begreen]

There is no gain in making the wall deeper. i would go with the 1.25" space. Just be sure to leave a gap or openings per stud cavity of an inch at the top and bottom so that the air behind the wall can freely convect.

 

[hilbiliarkiboi]

What gauge steel are u planning to use? Partition studs are pretty light.
Framing steel is more difficult to work with, but made to hold up.
Look at some 1.5" - 'hat' channel, and think about using some small mollys inserted close to a stud to attatch it.
It might also be a good idea to put a couple extra screws in the drywall next to each molly. Maybe 12" apart on mollys.

 

[hilbiliarkiboi]

Sorry! Reread ur post and see ur building a new wall.
If using partition material, I think I would double them back to back with a little adhesive between them.

Edit - add some sheetmetal screws to secure the adhesive.

 

[hilbiliarkiboi]

Hope I havent confused anyone other than myself.
If ur attatching to an existing wall like I'm about to do, look at the 1.5" hat.

 

[Leroy_B]

Ok a space of 1 1/4" will suffice for as an air gap and ventilation top and bottom has already been factored in the build to allow for convection.