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Product Description

Palusol is an intumescent building material based on sodium silicate with excellent technical features, as for instance the reaction onset at a low temperature, i.e. 100ºC. Particularity: The enclosed water starts evaporating in the event of a fire and thus offers additional cooling effects.

Test Certificate

Approval Z-19.11-14
Building material classification A2 (non-combustible) according to DIN 4102, part 1


Begins spansion at  approx. 100°C
Volume expansion  > 5-7 fold
Gross density  1600 [kg/m3]
Equilibrium moisture content  -% 25 – 40
Solubility  195 g / l (20º C)
Thermal conductivity at 20º C  at 20º C: [W / mK]: 0,8
pH-value  9,5 (10% (m), 20º C)
Colour  white / grey


Palusol fireboards are escpecially designed for:

  • Fire stopping doors made of timber, steel or aluminium
  • Glazings, façades
  • Difficult areas in fire stopping doors, such as door locks
  • Safety and control cabinets, safes
  • Double doors
  • Thermal insulation elements
  • Fire stopping shutters
  • Pipe and cable sealings
  • Gas valves, pneumatic drives and valves

The information in this document is based on our knowledge and experience to date. This information does not release the user from carrying out independent tests and trials due to the various influences when processing and applying our product. It is not possible to derive a guarantee of certain properties of suitability of the product in a concrete application case based on our information. All the descriptions, drawings, photographs, data, conditions, weight etc. included  may change without previous announcement; they do not constitute the contractually agreed property of the product. The recipient of our product is responsible to observe any trade mark rights and existing laws and regulations.