PROMATECT®-L are medium density, large-size calcium silicate boards with a homogeneous and stable structure used in insulation and fire protection applications. The lightweight PROMATECT®-L insulation boards can withstand peak temperatures of 500 °C and are suitable for complex assemblies such as dryers, industrial furnaces, and ventilation and air conditioning systems.

Further Information


  • Dryers;
  • Industrial furnaces;
  • Apparatus construction;
  • Ventilation and air conditioning;
  • Load bearing pipe columns


  • Lightweight;
  • Large-size;
  • High thermal resistance;
  • High mechanical strength;
  • Resistant to moisture and chemicals

Please note
All physical and mechanical values are averages based on standard production and tested according to internal procedures. The typical values are given for guidance. The figures can change dependent on the test methods used. If a particular value is of prime importance for a specification, please consult Promat Technical Department.