it has to be covered by drywall..
1/2" drywall really doesnt do much as a thermal barrier, 1" is the starting point
1/2" drywall really doesnt do much as a thermal barrier, 1" is the starting point
Thanks, Gary. If I'm reading this material right, the IRC wants at least an ignition barrier in attic spaces and reveals the thin solution I was looking for (1/64" thick corrosion-resistant steel). Owens Corning, however, says I don't need to worry about it.The thermal barrier is the plywood panel facer. An ignition barrier may be needed instead, if you meet all requirements listed here...