SILCA fireboards


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  • non-combustible
  • very light
  • available in large sizes
  • physiologically harmless I environmentally friendly
  • building product
  • good insulating effect
  • moisture-regulating, no mildew and no rotting
  • open-pored
  • simple to fit with screws or clips or by gluing
  • easy to dispose

SILCA 250KM insulation boards are used in the following areas:To protect walls against high temperatures when positioned behind a heating inserts.Both combustible walls, as well as those which are non-combustible but under static loads, have to be protected against high temperatures in order to avoid fires or long-term damage.SILCA 250KM boards are asbestos-free, high-temperature insulating boards which are specially approved for this form of application. The insulating thickness depends on the performance of the oven. Insulating thicknesses are specified by the insert manufacturer according to the type of mineral wool board.


Calcium silicate insulation board

Over the past years CASITHERM / SILCA has been the only German producer of calcium silicates to show that with innovative products you can continuously improve both the safety and productivity in the assembly of fireplaces. Our guarantee is the close contact to specialist craftsmen and the specialized trade and our treasure trove of experience obtained in the course of time, not least in the insulation in the industrial sector.

For many years furnace constructors inside and outside Europe have relied on the SILCA® 250KM calcium silicate insulation board authorized by the Deutsche Institut für Bautechnik Berlin (German Institute for Civil Engineering), national technical approval no. Z-43.14-117. The test results for the determination of the equivalent thicknesses according to the technical rules of the tiled stove and air heating building trade are shown in the following diagrams.

SILCA® 250KM is a real European champion. Thus the VKF Vereinigung Kantonaler Feuerversicherungen (Association of Swiss Cantonal Fire Insurance Underwriters) issued the Swiss Fire Prevention Approval no. 15202, the biggest Scandinavian research institute SINTEF issued certificate no. 120-0238, and for sure our SILCA® 250KM insulation board also achieves the results required by the new Austrian standard Ö-Norm B8311 in its issue 2013-12-15. Across the borders this means safety and untroubled pleasure in the building and heating of domestic fire places. According to standard EN 14 306:2010 SILCA® 250KM received the certificate no. 0432-CPD-420002242/2-6.

SILCA® 250KM replaces both fire protecting wall and thermal insulation in only one construction material and not only for this reason guarantees more favorable results than comparable products. The required thickness of the insulation layer is determined on the basis of the assembly instructions of the stove manufacturers, the technical rules TR-OL and further national regulations. Depending on the individual case of application and where appropriate, an active air ventilation has to be provided.

The main components of the SILCA calcium silicate boards are lime and sand. These are physiologically safe and Classified as environmentally compliant construction material. This is guaranteed by our modern production facilities, permanent quality control, external supervision and certification according to DIN EN ISO 9001: 2008. The environmental compatibility is certified by the environmental product declaration according to ISO 14025 and EN 15804 issued by the Institut Bauen und Umwelt e.V. (German institute for construction and environment), declaration nro. EPD-CSP-2013111-D.


Additional Information
Weight 1 kg