SUPALUX® is an A1 Non Combustible (EN13501-1) calcium silicate board reinforced with selected fibres and fillers. It is formulated without inorganic fibres and does not contain formaldehyde.

SUPALUX® is off-white in colour and has a smooth finish on one face with a sanded reverse face. SUPALUX® can be left undecorated or easily finished with paints, wallpapers or tiles.

SUPALUX® is resistant to the effects of moisture and will not physically deteriorate when used in damp or humid conditions. Performance characteristics are not degraded by age or moisture.

Further Information


  • Internal partitions
  • Shaftwall
  • Ceilings, floors and roofs
  • External and internal walls
  • Protected zones
  • Boiler backers


  • 30 - 240 minutes fire resistance
  • Fire Reaction Class: A1 Non Combustible EN13501-1
  • 45 plus years proven performance
  • Damp or humid conditions
  • High temperature environments (up to 80°C)
  • Slim constructions
  • Multiple applications
  • Early installation for faster build
Reaction to fire: A1, non-combustible
Use Category: Y, Z1, Z2
Approx. Dry Density (kg/m³): 950 kg/m³
Moisture Content Min (%): 6 %
Approx. Thermal Conductivity @ 20 °C (W/m°K): 0.17 W/m K
Bending Strength Longitudinal (N/mm²): 4.5 N/mm²
Tensile Strength Longitudinal (N/mm²): 0.99 N/mm²
Compressive Strength (N/mm² perpendicularly to the board surface): 9.3 N/mm²

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.



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