SIST EN 622-5:2006

SLOVENSKI STANDARD
SIST EN 622-5:2006
01-december-2006
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SIST EN 622-5:1998
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Fibreboards - Specifications - Part 5: Requirements for dry process boards (MDF)
Faserplatten - Anforderungen - Teil 5: Anforderungen an Platten nach dem
Trockenverfahren (MDF)
Panneaux de fibres - Exigences - Partie 5: Exigences pour panneaux obtenus par
procédé a sec (MDF)
Ta slovenski standard je istoveten z: EN 622-5:2006
ICS:
79.060.20 9ODNQHQHLQLYHUQHSORãþH Fibre and particle boards
SIST EN 622-5:2006 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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EUROPEAN STANDARD
EN 622-5
NORME EUROPÉENNE
EUROPÄISCHE NORM
July 2006
ICS 79.060.20 Supersedes EN 622-5:1997
English Version
Fibreboards - Specifications - Part 5: Requirements for dry
process boards (MDF)
Panneaux de fibres - Exigences - Partie 5: Exigences pour Faserplatten - Anforderungen - Teil 5: Anforderungen an
panneaux obtenus par procédé à sec (MDF) Platten nach dem Trockenverfahren (MDF)
This European Standard was approved by CEN on 24 May 2006.
CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European
Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national
standards may be obtained on application to the Central Secretariat or to any CEN member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by translation
under the responsibility of a CEN member into its own language and notified to the Central Secretariat has the same status as the official
versions.
CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France,
Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania,
Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: rue de Stassart, 36  B-1050 Brussels
© 2006 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 622-5:2006: E
worldwide for CEN national Members.

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EN 622-5:2006 (E)
Contents Page
Foreword.3
1 Scope .4
2 Normative references .4
3 Terms and definitions .5
4 Requirements.6
4.1 General.6
4.2 Requirements for non load-bearing boards, including boards for general purpose use .6
4.2.1 Requirements for boards for use in dry conditions.6
4.2.2 Requirements for boards for use in humid conditions.7
4.3 Requirements for load-bearing boards .7
4.3.1 Requirements for load-bearing boards for use in dry conditions .7
4.3.2 Requirements for load-bearing boards for use in humid conditions.8
4.4 Requirements for light MDF boards for non load-bearing applications, including general
purpose boards.9
4.4.1 Requirements for boards for use in dry conditions.9
4.4.2 Requirements for boards for use in humid conditions.10
4.5 Requirements for ultra-light MDF boards for non load-bearing applications, including
general purpose boards.10
4.6 Requirements for boards for use in rigid underlays in roofing and walls.11
5 Verification of compliance .12
5.1 General.12
5.2 External control.12
5.3 Factory production control.12
6 Supplementary properties .12
7 Marking .13
7.1 Boards marketed within the European Economic Area for construction applications.13
7.2 Other boards .13
Annex A (normative) Boil test according to EN 1087-1 — Modified procedure .14
Bibliography .15

Tables
Table 1 — Load duration category.5
Table 2 — Examples of load-duration assignment .6
Table 3 — Requirements for general purpose boards for use in dry conditions (type MDF).7
Table 4 — Requirements for general purpose boards for use in humid conditions (type MDF.H).7
Table 5 — Requirements for load-bearing boards for use in dry conditions (type MDF.LA) .8
Table 6 — Requirements for load-bearing boards for use in humid conditions (type MDF.HLS).9
Table 7 — Requirements for light MDF boards for use in dry conditions (type L-MDF).9
Table 8 — Requirements for light MDF boards for use in humid conditions (type L-MDF.H) .10
Table 9 — Requirements for ultra-light MDF boards for use in dry conditions (type UL1-MDF) .10
Table 10 — Requirements for ultra-light MDF boards for use in dry conditions (type UL2-MDF) .11
Table 11 — Requirements for use in rigid underlays in roofs and walls (type MDF.RWH).11
Table 12 — Maximum interval between test .12
Table 13 — Supplementary properties .12

2

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EN 622-5:2006 (E)
Foreword
This document (EN 622-5:2006) has been prepared by Technical Committee CEN/TC 112 “Wood based
panels”, the secretariat of which is held by DIN.
This European Standard shall be given the status of a national standard, either by publication of an identical
text or by endorsement, at the latest by January 2007, and conflicting national standards shall be withdrawn at
the latest by January 2007.
This document supersedes EN 622-5:1997.
This standard is one of a series specifying requirements for fibreboards. The other parts of this series are
listed in Clause 2 and in the bibliography.
The following modification has been made:
 New panel types light MDF (L-MDF, L-MDF.H), ultra light MDF (UL-MDF) and boards for use in rigid
underlays in roofing and walls (MDF.RWH) have been included.
According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following
countries are bound to implement this European Standard: Austria, Belgium, Cyprus, Czech Republic, Den-
mark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxem-
bourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzer-
land and United Kingdom.

3

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EN 622-5:2006 (E)
1 Scope
This European Standard specifies the requirements for dry process boards (MDF) as defined in EN 316.
The values listed in this European Standard relate to product properties but they are not characteristic values to
1)
be used in design calculations .
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated
references, only the edition cited applies. For undated references, the latest edition of the referenced
document (including any amendments) applies.
EN 310, Wood-based panels - Determination of modulus of elasticity in bending and of bending strength
EN 311, Wood-based panels - Surface soundness - Test method
EN 317, Particleboards and fibreboards - Determination of swelling in thickness after immersion in water
EN 318, Wood-based panels - Determination of dimensional changes associated with changes in relative hu-
midity
EN 319, Particleboards and fibreboards - Determination of tensile strength perpendicular to the plane of the
board
EN 320, Fibreboards - Determination of resistance to axial withdrawal of screws
EN 321, Wood-based panels - Determination of moisture resistance under cyclic test conditions
EN 326-1, Wood-based panels - Sampling, cutting and inspection - Part 1: Sampling and cutting of test pieces
and expression of test results
EN 326-2, Wood-based panels - Sampling, cutting and inspection - Part 2: Quality control in the factory
EN 326-3, Wood-based panels - Sampling, cutting and inspection - Part 3: Inspection of an isolated lot of
panels
EN 382-1, Fibreboards - Determination of surface absorption - Part 1: Test method for dry process fibreboards
EN 622-1, Fibreboards - Specifications - Part 1: General requirements
EN 1087-1:1995, Particleboards - Determination of moisture resistance - Part 1: Boil test
EN 12871, Wood-based panels - Performance specifications and requirements for load-bearing boards for
use in floors, walls and roofs
EN 13271, Timber fasteners - Characteristic load-carrying capacities and slip-moduli for connector joints
EN 13446, Wood-based panels - Determination of withdrawal capacity of fasteners
EN 13986, Wood-based panels for use in construction - Characteristics, evaluation of conformity and
marking

1) Such characteristic values (e.g. for use in design calculation in EN 1995-1-1) are either given in EN 12369-1 or derived
by testing according to EN 789, EN 1058 and ENV 1156.
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EN 622-5:2006 (E)
ISO 3340, Fibre building boards - Determination of sand content
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1
dry conditions
conditions corresponding to service class 1 of EN 1995-1-1 which is characterized by a moisture content in
the material corresponding to a temperature of 20 °C and a relative humidity of the surrounding air only
exceeding 65 % for a few weeks per year. Boards of this type are suitable for use only in hazard class 1 of
EN 335-3
3.2
humid conditions
conditions corresponding to service class 2 of EN 1995-1-1 which is characterized by a moisture content in
the material corresponding to a temperature of 20 °C and a relative humidity of the surrounding air only
exceeding 85 % only for a few weeks per year. Boards of this type are suitable for use in hazard classes 1
and 2 of EN 335-3
3.3
general purpose use
use in non load-bearing applications not otherwise specified
3.4
non load-bearing use
use in non load-bearing conditions, e.g. as part of a building or construction
3.5
load-bearing use
use in a load-bearing construction, i.e. an organized assembly of connected parts designed to provide
mechanical resistance and stability to the works
NOTE Also referred to as "structural use".
3.6
load duration class
class characterized by the effect of a constant load acting for a certain period of time in the life of the
structure
NOTE 1 The load duration classes are defined in EN 1995-1-1, see Table 1.
Table 1 — Load duration category
Order of accumulated duration of
Load duration class
characteristic load
Permanent More than 10 years
Long-term 6 months to 10 years
Medium-term 1 week to 6 months
Short-term Less than one week
Instantaneous

NOTE 2 Examples of load-duration assignment are given in Table 2. Since climatic loads (snow, wind) vary between
countries, the assignment of load-duration classes may be specified in the national Annex.
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EN 622-5:2006 (E)
Table 2 — Examples of load-duration assignment
Load duration class Examples of loading
Permanent Self weight
Long-term Storage
Medium-term Imposed floor load, snow
Short-term Snow, wind
Instantaneous Wind, accidental load

4 Requirements
4.1 General
Dry process boards shall comply with the general requirements of EN 622-1 together with the relevant
requirements set out in 4.2, 4.3, 4.4, 4.5 and 4.6 of this European Standard. Some supplementary properties
and their appropriate test methods are given in Clause 6.
The requirements in Tables 3 to 11 shall be met by 5 percentile values (95 percentile values in the case of
swelling in thickness), based on the mean test values for individual panels and calculated in accordance with
EN 326-1. In the case of swelling in thickness, they shall be equal to or less than the values in the tables, and in
the case of all other properties, they shall be equal to or greater than the values in Tables 3 to 11.
The values in Tables 3 to 11 for both bending strength and modulus of elasticity shall apply to test results
obtained in the weakest direction in the plane of the panel.
Properties not required for specific thickness ranges are marked "—".
With the exception of swelling in thickness and internal bond after boil test (see Tables 4, 6, 8 and 11), the
values given in the tables are characterised by a moisture content in the material corresponding to a
temperature of 20 °C and a relative humidity of 65 %. The values given for swelling in thickness and internal
bond after boil test are characterised by a moisture content in the material corresponding to a temperature of
20 °C and a relative humidity of 65 % before the treatment (immersion in water or boil treatment).
The moisture resistance of dry process boards for use in humid conditions (see Tables 4, 6, 8 and 11) is
as
...