Calcium silicate is a mineral-based building material that is available in the form of boards. It consists of lime (calcium oxide), quartz sand (silicon dioxide), and pore formers. In the first production step, the substances are slurried in water and react to form a precursor of calcium silicate. In a further production step, the boards are cured under superheated steam and high pressure. This process creates a fine-pored open structure with high capillary absorbency.

Calcium silicate boards are designed for maximum application temperatures of 1,000 °C (at a density of 225 kg/m³) and 1,100 °C (at a density of 245 kg/m³). Due to their high porosity, they offer excellent insulating properties for all temperature ranges (from -200 °C to 1,000 °C).

The boards are available in sizes of 610 × 1,000 mm and 1,220 × 1,000 mm and in thicknesses between 20 mm and 100 mm. If required, customer-specific molded parts can also be produced from them.

Typical applications include, for example: