EN 636:2012

SLOVENSKI STANDARD
01-januar-2013
1DGRPHãþD
SIST EN 636:2004
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Plywood - Specifications
Sperrholz - Anforderungen
Contreplaqué - Exigences
Ta slovenski standard je istoveten z: EN 636:2012
ICS:
79.060.10 Vezan les Plywood
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
EN 636
NORME EUROPÉENNE
EUROPÄISCHE NORM
September 2012
ICS 79.060.10 Supersedes EN 636:2003
English Version
Plywood - Specifications
Contreplaqué - Exigences Sperrholz - Anforderungen
This European Standard was approved by CEN on 11 August 2012.

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 CEN-CENELEC Management Centre 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 CEN-CENELEC Management Centre has the same
status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,
Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United
Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2012 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 636:2012: E
worldwide for CEN national Members.

Contents Page
Foreword .3
1 Scope .4
2 Normative references .4
3 Terms and definitions .5
4 Symbols and subscripts .6
5 Classification system .6
6 General requirements .8
6.1 Tolerances on dimensions .8
6.2 Mechanical characteristics .8
6.2.1 General purpose (non-structural application) .8
6.2.2 Structural application .9
6.3 Formaldehyde release .9
6.3.1 Classification .9
6.3.2 Conditioning of test pieces . 10
7 Requirements for plywood for use in dry conditions . 10
7.1 Bonding quality . 10
7.2 Biological durability . 10
8 Requirements for plywood for use in humid conditions . 11
8.1 Bonding quality . 11
8.2 Biological durability . 11
9 Requirements for plywood for use in exterior conditions. 11
9.1 Bonding quality . 11
9.2 Biological durability . 11
10 Supplementary properties . 11
11 Verification of compliance . 11
11.1 General . 11
11.2 External control . 11
11.3 Factory production control . 12
12 Marking, identification and documentation . 12
12.1 Boards marketed within the European Economic area for construction applications . 12
12.2 Other boards . 12
Annex A (normative) Supplementary properties . 14
Bibliography . 15

Foreword
This document (EN 636:2012) 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 March 2013, and conflicting national standards shall be withdrawn at
the latest by March 2013.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent rights.
This document supersedes EN 636:2003.
Compared to EN 636:2003, the following modifications have been made:
a) classification system for bending strength and bending modulus completed with classes F 35 and E 35;
b) limit values in Table 2 changed;
c) letter indicating the intended application changed from "G" to "NS";
d) marking of formaldehyde release revised in accordance with EN 13986;
According to the CEN/CENELEC Internal Regulations, the national standards organisations of the following
countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech
Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece,
Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,
Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom.
1 Scope
This European Standard specifies the requirements for plywood, as defined in EN 313-2, for both general
purpose use (non-structural application) and structural application in dry, humid or exterior conditions. It also
gives a classification system based on the bending properties.
NOTE 1 This European Standard is referenced in EN 13986 for construction applications.
NOTE 2 For additional guidance on application, information is provided in CEN/TS 1099.
The values listed under Clause 4 relate only to product properties; they are not 'characteristic values' and are
not to be used in design calculations.
NOTE 3 Characteristic values (i.e. for use in design calculation according to EN 1995-1-1) are given either in
EN 12369-2 which is based on the classification system given in this standard or by the manufacturer based on testing
according to EN 789, EN 1058 and ENV 1156.
Additional information on supplementary properties for certain applications is also given.
2 Normative references
The following documents, in whole or in part, are normatively referenced in this document and are
indispensable for its application. 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 314-1, Plywood — Bonding quality — Part 1: Test methods
EN 314-2, Plywood — Bonding quality — Part 2: Requirements
EN 315, Plywood — Tolerances for dimensions
EN 318, Wood-based panels — Determination of dimensional changes associated with changes in relative
humidity
EN 322, Wood-based panels — Determination of moisture content
EN 323, Wood-based panels — Determination of density
EN 324-1, Wood-based panels — Determination of dimensions of boards — Part 1: Determination of
thickness, width and length
EN 324-2, Wood-based panels — Determination of dimensions of boards — Part 2: Determination of
squareness and edge straightness
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: Initial type testing and factory
production control
EN 326-3, Wood based panels — Sampling, cutting and inspection — Part 3: Inspection of an isolated lot of
panels
EN 335-3:1995, Durability of wood and wood-based products — Definition of hazard classes of biological
attack —Part 3: Application to wood-based panels
EN 594, Timber structures — Test methods — Racking strength and stiffness of timber frame wall panels
EN 596, Timber structures — Test methods — Soft body impact test of timber framed walls
EN 635-1, Plywood — Classification by surface appearance — Part 1: General
EN 635-2, Plywood — Classification by surface appearance — Part 2: Hardwood
EN 635-3, Plywood — Classification by surface appearance — Part 3: Softwood
CEN/TS 635-4, Plywood — Classification by surface appearance — Part 4: Parameters of ability for finishing,
Guideline
EN 635-5, Plywood — Classification by surface appearance — Part 5: Methods for measuring and expressing
characteristics and defects
EN 717-1, Wood-based panels — Determination of formaldehyde release — Part 1: Formaldehyde emission
by the chamber method
EN 717-2, Wood-based panels — Determination of formaldehyde release — Part 2: Formaldehyde release by
the gas analysis method
EN 789, Timber structures — Test methods — Determination of mechanical properties of wood based panels
EN 1058, Wood-based panels — Determination of characteristic 5-percentile values and characteristic mean
values
ENV 1156, Wood-based panels — Determination of duration load and creep factors
EN 1195, Timber structures — Test methods — Performance of structural floor decking
EN 12369-2, Wood-based panels — Characteristic values for structural design —Part 2: Plywood
EN 13446, Wood-based panels — Determination of withdrawal capacity of fasteners
EN 13810-1, Wood-based panels — Floating floors — Part 1: Performance specifications and requirements
CEN/TS 13810-2, Wood-based panels — Floating floors — Part 2: Test methods
EN 13986, Wood-based panels for use in construction – Characteristics, evaluation of conformity and marking
EN 14272, Plywood — Calculation method for some mechanical properties
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1
plywood for use in dry conditions
plywood to be used in conditions characterised 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
Note 1 to entry: These conditions correspond with Service Class 1 according to EN 1995-1-1.
Note 2 to entry: Boards of this type are suitable for use in Use Class 1 of EN 335-3.
3.2
plywood for use in humid conditions
plywood to be used in conditions characterised by a moisture content in the material corresponding to a
temperature of 20 °C and relative humidity of the surrounding air only exceeding 85 % for a few weeks per
year
Note 1 to entry: These conditions correspond with Service Class 2 according to EN 1995-1-1.
Note 2 to entry: Boards of this type are suitable for use in Use Class 1 and 2 of EN 335-3.
Note 3 to entry: This type of plywood is appropriate for protected external applications (e.g. behind cladding or under
roof coverings), but is also capable of resisting weather exposure for short periods (e.g. when exposed during the
construction). It is also suitable for interior situations where the service moisture condition is raised above humidity of dry
conditions.
3.
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