VERMICULUX®-S is an A1 non-combustible calcium silicate board which provides up to 240 minutes fire protection to structural steel.

VERMICULUX®-S has permanent dimensional stability, so in the event of a fire it reduces the speed at which the steelwork will heat up, allowing it to maintain its loadbearing capacity for longer.

VERMICULUX®-S is used to protect one, two, three or four sided encasements to universal columns and beams, joists and RSJs, structural hollow sections, bracing, lattice beams, partially exposed members, perimeter beams, beams supporting composite floors with profiled metal decking and wind posts.

Further Information


  • Fire protection of steel structures


  • Up to 240 minutes fire protection
  • Fire Reaction Class: A1 Non Combustible EN13501-1
  • Lightweight (9.6-24kg/m2)
  • Available in a range of thicknesses
  • Thinner solution when compared to other fire-resistant constructions
  • Can be installed before the building is weathertight
  • Can accept a decorative finish.
  • Fully tested and certified (IS014001, ISO9001)
  • Independently tested by Exova Warrington Fire (WF 385248)
  • Responsibly sourced materials

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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