Fire plastering

Building elements with a load-bearing function in a building have a level of fire resistance on their own. If the fire resistance of these elements is insufficient, the load-bearing structures must be additionally treated with a material that increases their fire resistance. For both steel load-bearing structures and concrete building elements, it is possible to apply a plaster system of a previously determined thickness which, in the event of a fire, will fireproof the structure for the required period of time to prevent, for example, the critical temperature of the steel from being reached and the structure collapsing. The fire plaster follows the shape of the structure.

Elements treated in this way can have a fire resistance of up to 120 minutes for steel elements and up to 240 minutes for concrete (reinforced concrete) elements according to the ETAG 018-3 test, for the whole lifetime of the structure.

Fire-resistant plasters can be used to increase the fire resistance of:

  • steel structures,
  • structures made of concrete,
  • structures made of concrete cast into trapezoidal sheets,
  • bonded carbon slats.

The most common colours and designs of fire-resistant plasters

Fire-resistant plasters are available in grey-white. Almost any shade can be supplied at the buyer's request. Without surface finish, the texture of this plaster is coarsely textured, resembling stalactites. The appearance of the plasterwork can be adjusted to a flat surface by simply adding a thin layer of classic plaster. We use materials by Knauf for our projects.