12mm RCM Y Wall Calcium Silicate Board 2400mm x 1200mm

RCM Y-Wall Calcium Silicate Board measuring 2400mm x 1200mm x 12mm is a high-performance, non-combustible sheathing board designed for use behind façade systems, rainscreens, and cladding. Manufactured from calcium silicate reinforced with selected fibres, it provides a dimensionally stable substrate with excellent fire resistance and structural rigidity. The board is suitable for both steel and timber frame applications, forming a robust external sheathing layer that maintains integrity under high temperature and moisture variations. Its smooth, dense surface resists delamination, impact, and weather exposure during construction, ensuring long-term performance. RCM Y-Wall is engineered for use as part of ventilated façade systems and has been independently tested to meet fire and durability standards. The 12mm thickness provides enhanced stiffness and strength, making it suitable for medium to high-rise projects where wind loading and mechanical fixing demands are greater.