... used for a number of applications including wall and ceiling linings, fascias, soffits, tile backing and underlayment. ... magnesium oxide, cellulose, pertile, and fiberglass scrim .MgO board is in various thicknesses and sheet sizes. It also ... Ceiling• Internal Walls - Half Height/Full Height• Internal Wall Lining• Eaves and Staff Lining• Pre-fabricated Shelter-Internal/External walls MgO Ceiling Board ...