MgO Board otherwise called “Magnesium Oxide Board” is a factory-made product. It is a type of relatively new inorganic-bonded composite. Its main mineral is Magnesium Oxide (MgO). MgO Boards are produced with alkali–resistant fiberglass mesh as strengthening material.
MgO Boards are used in place of traditional gypsum drywall as wall and ceiling covering material and sheathing. It is also used in a number of other construction applications such as fascias, soffit, shaft-liner and area separation, wall sheathing, and as tile backing (backer board) or as substrates for coatings and insulated systems such as finish systems, EIFS, and some types of stucco.
