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hellonoko 05-02-2012 11:10 PM

non-combustible structural framing
I am remodeling my basement and have insulated most of the walls with XPS over cinder block and a cedar framed false wall inside that.

However there is one more area where the existing fireplace is that I want to insulate. It looks something like this:

I plan on putting an applicable non combustible insulate such as Roxul Rockboard over this wall to insulate it.

I know with proper head shields and double wall chimney pipe I could get my chosen wood stove quite close to a unprotected surface, however I would like to make the entire wall non-combustible.

Since Roxul Rockboard is not structural I need some kind of non-combustible studs or structural elements to use in the wall.

Any suggestions on how to best go about this?

jaydevries 05-02-2012 11:32 PM

if wanting to use wood try pyroguard but get out your wallet and hold on.
or look at using metal studs "dietrich or clark" and cement board or drywall

GBrackins 05-03-2012 12:28 AM

light gauge metal framing studs would work

hellonoko 05-03-2012 03:14 PM


Are light gauge metal framing studs non combustible or just fire resistant?

GBrackins 05-03-2012 03:30 PM

they will not ignite like wood studs, so they are non-combustible. however, being a thermoplastic as steel is, they can be affected when exposed to fire or increased exposure to increased temperatures as found in a fire. Steel expands when exposed to higher temperatures.

light gauge steel studs are routinely used in fire wall construction, and often in commercial construction. Galvanized steel studs will resist corrosion, and are more dimensionally stable than wood when exposed to higher moisture content as typically found in basements.

hellonoko 05-03-2012 03:55 PM


Thanks, and I suppose I can just get a higher/ very high gauge of steel stud if I want it to be more heat resistant.

GBrackins 05-03-2012 05:31 PM

well if they can work as part of a fire wall preventing the spread of fire from one area to the next I'm sure they would work in your application.

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