Fire resistanceFire resistance EN 1634-1 : E, EI1, EI2, EW 30', 60', 90', 120', 180'

If fire breaks out, the construction elements must fulfil their function despite the effects of the fire. The stability of the structural elements must be ensured throughout the period of time needed to evacuate the building. The walls and doors that separate the various compartments of the structure must limit the spread of the fire. Heinen can confine fire for up to 180 minutes. In fire-resistant compartmentalisation, but the weak points are the building openings.

The evacuation of people and deployment of the emergency services will be more efficient if the atmosphere is clear and breathable. Thanks to intumescent seals (which swell upon contact with heat), developed by Heinen, and certified smoke tightness, Heinen doors prevent the spread of fire and often fatal smoke.

Heinen fire-resistant doors have been designed to meet your needs in exceptional dimensions, while still meeting the requirements in terms of intensive use and mechanical resistance. For example, a Heinen double door, EI1-60, can easily compartmentalise an opening of 4.40 x 4.40 m!

Heinen has always been a pioneer in fire-resistant compartmentalisation.

As early as 1973, the brand attracted attention by perfecting the world’s first metal fire-resistant door! Since 2010, Heinen doors have been validated according to European standards by no fewer than 30 official fire tests. The pace of developments and the intensive activity in the R&D department even prompted the company to purchase its own furnace that meets European standards in order to carry out pre-tests.

Standards table

Country Europe Belgium France
Standards EN 13501-2 EN 1634-1 NBN 713020 + Benor Atg Ministerial decree 03/08/99
Symbols E EW EI Rf CF
Resistance class E 15
E 20
E 30
E 45
E 60
E 90
E 120
E 180
E 240
EW 15
EW 20
EW 30
EW 45
EW 60
EW 90
EW 120
EW 180
EW 240
EI1 15
EI1 20
EI1 30
EI1 45
EI1 60
EI1 90
EI1 120
EI1 180
EI1 240
EI2 15
EI2 20
EI2 30
EI2 45
EI2 60
EI2 90
EI2 120
EI2 180
EI2 240
Rf 30
Rf 60
Rf 90
Rf 120
CF 30
CF 60
CF 90
CF 120
CF …
Fire resistance performance featureResistance class
E 30
E 60

E 120
E 180
E 240

Single doors : E 300
EW 30
EW 60

EW 120
EW 180
EW 240

Single doors : EW 300
EI1 30
EI1 60
EI1 120
EI1 180
EI2 30
EI2 60
EI2 120
EI2 180
EI2 240
Rf 30
Rf 60
CF 30
CF 60
CF 90
CF 120
 + tunnel doors with resistance :
HCM120 / CN240 (N3)



European fire-resistance standards have gradually taken over from the national standards and are now the reference for fire-resistance tests and classification.

The reference for fire-resistance tests on doors, shutter assemblies and windows is European standard EN 1634-1.

The resistance class is expressed in minutes, corresponding to the duration of the fire test (from 15 to 240 minutes).

Passing the fire-resistance tests involves different categories of criteria, depending on the country:

  • fire resistance (E)
  • insulation (I) subdivided into 2 categories: I1 and I2
  • radiation (W).

Thermal insulation I1 and I2

Insulation is subdivided into two categories which apply in different countries: I1 and I2. The I1 fire resistance tests are more stringent than the I2 tests (see additional information available for downloading below).

The E is mainly used in Anglo-Saxon countries and was previously known as ‘fire-retardant’. Example: E60

EI2 is applied in most EU countries, such as France, Germany, Italy, Spain, etc. Example: EI2-180

Belgian legislation requires EI1. Example: EI1-60

By default, if specifications indicate I without specifying 1 or 2, they usually refer to EI2. Example: EI 30 usually refers to EI2-30.

EW is required in the Netherlands. Example: EW90

To find out about the differences in tests and values between EI1 and EI2, download our documentation on fire-resistance standards!

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