a fire-resistant, high strength, durable structural sheathing material.
ArmorBoard is made of a 1/2″ board of Magnesium Oxide (MgO), and can be used to create higher fire ratings in assemblies as required. In addition, it can also be utilized in applications where field returns vary from standard provided sizes. ArmorBoard comes noncoated, or as ArmorBoard Plus.
What's the Difference Between ArmorBoard and ArmorWall?
ArmorWall Fire-Rated Structural Insulated Sheathing™
ArmorBoard Fire-Rated Structural Sheathing
ArmorWall Fire-Rated Structural Insulated Sheathing™ has a layer of poured polyurethane insulation fused to a 1/2″ layer of Magnesium Oxide board.
ArmorBoard Fire-Rated Structural Sheathing is ONLY the 1/2″ layer of Magnesium Oxide board.