Skip to content

Fire requirements apply to the whole product

It is not unusual for the decision to purchase fire-impregnated wood to be based on the fire class specified in the fire protection documentation, for example Euroclass B-s1,d0, without taking into account other conditions for meeting the stated fire class.It is not unusual for wooden panel to be approved B-s1,d0 directly on the substrate, i.e. no air gap, but also for the wooden panel to be approved as a tight wall, but not mounted as a sparse panel, for example with a 10mm gap between the wooden panels.

Wstp_burnhouse_LM-2

Common shortcomings

It is not unusual for the decision to purchase fire-impregnated wood to be based on the fire class specified in the fire protection documentation. The reason for incorrect procurement can be many, for example insufficient documentation, ignorance and time pressure. Below are some examples of pitfalls you should watch out for: 

  • The approval does not cover the air gap
  • The approval does not cover sparse panels
  • The approval does not cover the mounting condition
  • The approval does not include insulation
  • The approval does not include the substrate
  • The approval does not cover surface treatment
  • The approval does not cover exterior mounting without surface treatment
  • The approval does not cover exterior mounting with surface treatment

The above shortcomings can occur in both fire-impregnated wood and fire-resistant painted wood. The difference between fire protection painting is that fire protection painting is generally approved on D-substrates, while fire impregnation, which enhances the wood's properties against fire, must be tested and approved for each type of wood. Otherwise, the same basic requirement specification applies, for example fire protection properties on all sides, for example sparse panels.

The same fire class does not mean equivalent quality assurance

Although the technical fire class, for example B-s1,d0, is verified for fire impregnation and fire protection painting, there are decisive differences in process, execution, self-inspection and manufacturing control.

Method Application Manufacturing control Third party control Every single wood type Available for purchase for custom application
Vacuum pressure impregnation Industrial Yes Ingoing third-party control of the notified body, as well as continuously submitted samples from production Yes No
Fire protection painting in factory Industrial Yes No, D-substrate is enough No
Fire protection paint Manufacturer of the paint Yes The majority of colours can be purchased by anyone and thus performed by anyone
Fire protection painting at workplace Manual No No