Mineral fibre board insulation is typically made from mineral wool, which is produced from natural or synthetic minerals. The primary raw materials used include basalt rock, which is melted and spun into fibers, or recycled glass, which also undergoes a similar process. These fibers are then combined with a binder, formed into boards, and cured through heat treatment. The resulting product is lightweight, strong, and possesses a high degree of rigidity, making it suitable for various applications.