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Finland

The Nordic countries Denmark, Finland, Iceland, Norway and Sweden cooperate within the framework of the Nordic Council in order to include harmonisation of national law while defining a overall classification of material. 

Table 1: Nordic council classification 

ComponentFire test methodDescriptionClassification
MaterialNT 001Non-combustibility testNon-combustible/ combustible
Wall and ceiling liningNT 003Fire protection ability of coveringsK0 / K1 / K2
Interior surface finishesNT 002Ignitability testln 1 / ln 2 / ln 3
Exterior surface finishesNT 004Heat release and smoke generation testUt 1 / Ut 2
RoofingNT 006Roof fire spreadTa 1 / Ta 2
Floor coveringsNT 007Flooring fire spread and smoke generationG


The actual classification used for Finland regulations for the fire behaviour of materials/component is described in the standard National Building Code of Finland, Part E1, Fire Safety of Buildings, 1997. 3 fire classes of building are considered (see tables below): 

Table 2: building class tests for all materials excepted floorings

CharacteristicTestAssessment
Non combustibilityISO 1182: Fire test for building materials: Reaction to fire, Non-combustibility test 
IgnitabilitySFS 4190:E (NT FIRE 002) Fire tests. Building products: Ignitability
ISO 5657 (NT FIRE 033) Fire tests-Reaction to fire.Ignitability of building products.
Class 1:non-igniting surface
Class 2: slowly igniting surface
Fire spread characteristicsSFS 4192:E (NT FIRE 004) Fire tests. Building products: Heat release and smoke productionClass I: non-fire spreading surface
Class II: slowly fire spreading surface


Table 3: Fire class and use of the building 

 Fire class of the building
 High fire level requirementMedium fire level requirementLow fire level requirement
Dwellings:
Walls and ceilings
2 / -
Slowly igniting surface, No demands for fire spread
1 / I
Non igniting surface, Non-fire spreading surface
2 / -
Slowly igniting surface, No demands for fire spread
Accommodation:
Walls and ceilings
2 / -
Slowly igniting surface, No demands for fire spread
1 / I
Non igniting surface, Non-fire spreading surface
2 / -
Slowly igniting surface, No demands for fire spread
External surfaces of External wall1 / I
Non igniting surface, Non-fire spreading surface
1 / I
Non igniting surface, Non-fire spreading surface
2 / -
Slowly igniting surface, No demands for fire spread
Surfaces adjacent to Ventilation gaps1 / I
Non igniting surface, Non-fire spreading surface
1 / I
Non igniting surface, Non-fire spreading surface
- / -
No requirement


In residential or office buildings of class P1 with not more than 4 storeys, residential or office buildings of class P2 with 3-4 storeys and institutional buildings of class P2, materials of class 2/- may be used for the external surfaces of external walls if:
  • The building is provided with an automatic extinguishing system
  • The spread of fire along the surface of the external wall and the ventilation gaps has been limited by partitioning elements and
  • The hazard of external ignition has been taken into consideration.