15let a2 arrowleft arrowright baleni_1_ano baleni_1_ne baleni_2_ano baleni_2_ne baleni_3_ano baleni_3_ne baleni_4_ano baleni_4_ne bryle bulleye cancel ce contact download email facebook-c facebook lang lloyd logo-15let logo-a2 logo-ce logo-full logo-lloyd logo-pefc lupa-c lupa menu otaznik pefc pinterest-p pinterest play prednost_ekologicka prednost_hmyz prednost_hygiena prednost_mraz prednost_ohnivzdorna prednost_plisne prednost_pocasi prednost_zvuk prodejci rss shevron-left shevron-right sipka-left-bold sipka-left sipka-right-bold sipka-right skoleni smile telefon ukazky unsmile youtube-play youtube
Commercial information
  • +420 724 301 191
  • +420 724 328 527
Technical information
  • +420 724 301 191
  • +420 724 328 527
Orders, quotes, billing
  • +420 724 233 560
  • +420 606 710 721

Fire-resistant applications

Fire-resistant applications

CETRIS® cement bonded particleboards is classified as class A2 in terms of flame reaction, with additional classification s1 (smoke generation while burning) and d0 (flaming particles), with overall classification A2-s1,d0, non-flammable material. Thanks to this property CETRIS® boards may be used for fire protection of building structures and direct building of structures with the prescribed fire resistance. Fire resistance concerns a specific and decisive property of building structures. It is expressed in time (in minutes) and it inicates the time for which the assessed structures are able to resist the effects of "standard fire", i.e. fire occurring under precisely defined conditions. The fire resistance classification is carried out either based on a test, including conditions of direct application, or based on extended application (calculations, extrapolation, etc.) by an authorized person who issues a fire classification certificate. Fire resistance is defined in minutes according to the basic scale of resistance for 15, 30, 45, 60, 90, 120 and 180 minutes. The values of fire resistance of the individual marginal conditions are identified as follows:
  • R load-bearing capacity and stability
  • E integrity
  • I insulation ability – limit temperature on non-warmed surface
  • W limit density of heat flow from non-heated side
  • S combustible penetration

For every structure and pursuant to the respective project standard the determining marginal conditions are defined; then suitable structures are selected, such as:

  • Structure complying with requirements of three basic marginal conditions, i.e. stability (R), integrity (E) and insulation ability (I) - the fire resistance of such structure is REI. These are primarily the requirements imposed on bearing fire separating structures, i.e. walls and ceilings.
  • For non-bearing fire separating structures (interior partitions, soffits) fire resistance requirements need to meet only 2 marginal conditions, i.e. integrity (E) and insulation ability (I), thus EI.
  • For bearing bar elements (beams and columns) only load capacity and stability are required - R.

for this system can be downloaded in PDF format.

Download information

How to choose the right board:

Interactive guide