Calcium Silicate Fire Board is a smooth, asbestos free fire board with good thermal conductivity. Calcium Silicate Boards can be used for various applications, including ceilings, roofs, floor partitions, external walls, ventilation and smoke extraction ducts, tunnel fire protection, smoke barriers, as well as a cladding material around wooden panelling. The Calcium Silicate Board unit size is 1.220m x 2.440m x 12mm.