EN 13353:2022

Solid wood panels (SWP) - Requirements

This document specifies requirements for solid wood panels as specified in EN 12775 with a maximum thickness of 80 mm for use in dry, humid and exterior conditions as specified in service classes 1, 2 and 3 of EN 1995-1-1.
Additional information on supplementary properties for certain applications is given in Annex A.

Massivholzplatten (SWP) - Anforderungen

Dieses Dokument legt Anforderungen an Massivholzplatten nach EN 12775 mit einer Dicke von höchstens 80 mm zur Verwendung im Trocken , Feucht- und Außenbereich entsprechend den Nutzungsklassen 1, 2 und 3 nach EN 1995-1-1 fest.
Es werden zusätzliche Informationen über weitere Eigenschaften für bestimmte Verwendungszwecke in Anhang A angegeben.

Bois panneautés (SWP) - Exigences

Le présent document spécifie les exigences pour les bois panneautés tels que spécifiés dans l’EN 12775 avec une épaisseur maximale de 80 mm pour utilisation en milieux sec, humide et extérieur comme spécifié dans les classes de service 1, 2 et 3 de l’EN 1995 1 1.
Des informations supplémentaires sur des propriétés complémentaires pour certaines applications sont également données dans l’Annexe A.

Masivne lesne plošče (SWP) - Zahteve

Ta dokument določa zahteve za masivne lesne plošče, kot je opredeljeno v standardu EN 12775, z največjo debelino 80 mm za uporabo v suhih, vlažnih in zunanjih pogojih, kot je opredeljeno v razredih uporabe 1, 2 in 3 standarda EN 1995-1-1:2004.
Podane so tudi dodatne informacije o dopolnilnih lastnostih za določene vrste uporabe.

General Information

• Status: Published
• Publication Date: 19-Jul-2022
• Withdrawal Date: 19-Jan-2023
• ICS: 79.060.99 - Other wood-based panels
• Technical Committee: CEN/TC 112 - Woodbased panels
• Drafting Committee: CEN/TC 112/WG 9 - Solid wood panels
• Current Stage: 6060 - Definitive text made available (DAV) - Publishing
• Start Date: 20-Jul-2022
• Due Date: 25-Jul-2022
• Completion Date: 20-Jul-2022
• Directive: 305/2011 - Regulation (eu) No 305/2011 of the European Parliament and of the Council of 9 march 2011 laying down harmonised conditions for the marketing of construction products and repealing council directive 89/106/eec
• Mandate: M/113 - Mandate to CEN/CENELEC concerning the execution of standardization work for harmonized standards on wood based panels
• Ref Project: SIST EN 13353:2022 - Solid wood panels (SWP) - Requirements

Relations

• Replaces: EN 13353:2008+A1:2011 - Solid wood panels (SWP) - Requirements
• Effective Date: 27-Jul-2022

Overview

EN 13353:2022 - "Solid wood panels (SWP) - Requirements" (CEN) specifies mandatory requirements for solid wood panels (as defined in EN 12775) with a maximum thickness of 80 mm for use in dry, humid and exterior conditions corresponding to service classes 1, 2 and 3 of EN 1995-1-1. The standard defines technical and structural classes, testing and verification methods, marking and factory production control. Annex A gives supplementary properties for particular applications.

Key topics and technical requirements

• Scope and classes
  • Technical classes for non‑structural: SWP/1 NS, SWP/2 NS, SWP/3 NS
  • Technical classes for structural: SWP/1 S, SWP/2 S, SWP/3 S (and SD variants based on declared values)
• Dimensional tolerances
  • Nominal length/width: ±2.0 mm
  • Nominal thickness: ±1.0 mm
  • Thickness variation within a single panel: 0.5 mm
  • Edge straightness & squareness: 1.0 mm/m
• Moisture content at dispatch
  • Dry (service class 1): 8 ± 2 %
  • Humid (service class 2): 10 ± 3 %
  • Exterior (service class 3): 12 ± 3 %
  • Deviations allowed for chemically/thermally treated wood or regional climate if specified.
• Bonding quality
  • Single-layer panels: lower 5‑percentile shear strength ≥ 2.5 N/mm²; mean wood failure > 40% (unless density > 600 kg/m³).
  • Multi-layer panels: shear strength bands with minimum wood-failure % per Table 2 (e.g., 0.4 ≤ f < 0.8 N/mm² → ≥ 40% wood failure).
  • Bonding tests per EN 13354 and sampling per EN 326-1.
• Adhesives for structural use
  • Acceptable: phenolic/aminoplastic (thermosetting), polyurethane (PU), EPI.
  • Other adhesives must demonstrate suitability via EN 301 and creep testing per EN 15416‑3 (thin glue-line 0.1 mm).
• Other aspects
  • Biological durability, mechanical characteristics, formaldehyde release, verification (factory production control and external control) and marking requirements are specified.

Applications and who uses this standard

• Target users: panel manufacturers, timber engineers, architects, specifiers, product certification bodies, testing laboratories, and building material suppliers.
• Practical uses: design and production of load‑bearing and non‑load bearing panels for floors, roofs, walls, formwork, cladding and exterior joinery, ensuring panels meet dimensional, bonding and durability criteria for intended service class.
• Useful for compliance, CE marking (where applicable), procurement specs and material selection for timber construction projects.

Related standards

• EN 12775 (classification/terminology), EN 1995‑1‑1 (Eurocode 5 service classes), EN 13354 (bonding test), EN 301, EN 322, EN 324‑1/2, EN 326‑1/2, EN 1058, EN 13986, EN 15416‑3.

Keywords: EN 13353:2022, solid wood panels, SWP requirements, bonding quality, dimensional tolerances, moisture content, service classes, adhesives for structural panels.

Standards Content (Sample)

SLOVENSKI STANDARD
01-september-2022
Nadomešča:
SIST EN 13353:2009+A1:2011
Masivne lesne plošče (SWP) - Zahteve
Solid wood panels (SWP) - Requirements
Massivholzplatten (SWP) - Anforderungen
Bois panneautés (SWP) - Exigences
Ta slovenski standard je istoveten z: EN 13353:2022
ICS:
79.060.99 Druge lesne plošče Other wood-based panels
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN 13353
EUROPEAN STANDARD
NORME EUROPÉENNE
July 2022
EUROPÄISCHE NORM
ICS 79.060.99 Supersedes EN 13353:2008+A1:2011
English Version
Solid wood panels (SWP) - Requirements
Bois panneaut? (SWP) - Exigences Massivholzplatten (SWP) - Anforderungen
This European Standard was approved by CEN on 20 April 2022.

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, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and
United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2022 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 13353:2022 E
worldwide for CEN national Members.

Contents Page
European foreword . 3
1 Scope . 4
2 Normative references . 4
3 Terms and definitions and classes . 5
3.1 Terms and definitions . 5
3.2 Classes for solid wood panels indicating their intended use . 6
3.2.1 Technical classes for non-structural use . 6
3.2.2 Technical classes for structural use . 6
3.2.3 Classes for structural use based on individually declared values . 6
4 Requirements . 7
4.1 Dimensional tolerances . 7
4.2 Moisture content at dispatch . 7
4.3 Bonding quality . 7
4.3.1 General. 7
4.3.2 Single layer solid wood panel . 7
4.3.3 Multi-layer solid wood panel . 7
4.3.4 Adhesive for solid wood panels in structural applications . 8
4.4 Biological durability . 8
4.5 Mechanical characteristics . 8
4.5.1 General. 8
4.5.2 Structural applications . 8
4.5.3 Non-structural applications . 10
4.6 Formaldehyde release . 10
5 Supplementary properties . 10
6 Verification of compliance . 10
6.1 General. 10
6.2 External control . 10
6.3 Factory production control . 10
7 Marking . 12
7.1 Boards marketed within the European Economic Area for construction applications
................................................................................................................................................................... 12
7.2 Other boards . 12
Annex A (normative) Properties for structural and non-structural applications . 13
Annex B (normative) Alternative to determining the characteristic values for the
homogeneous rectangular substitute cross-section . 14
Bibliography . 15
European foreword
This document (EN 13353:2022) 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 2023, and conflicting national standards shall
be withdrawn at the latest by January 2023.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN shall not be held responsible for identifying any or all such patent rights.
This document supersedes EN 13353:2008+A1:2011.
Compared to EN 13353:2008+A1:2011, the following changes have been made:
a) additional types of adhesive for load-bearing panels were included, see 4.3.4;
b) modification of the thickness range and of the requirements for single-layer panels given in Table 3;
c) modification of the thickness ranges and of the requirements for multi-layer panels given in Table 4;
d) Annex B (normative) included (alternative to determining the characteristic values for the
homogeneous rectangular substitute cross-section);
e) editorial changes.
Any feedback and questions on this document should be directed to the users’ national standards body.
A complete listing of these bodies can be found on the CEN website.
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, France, Germany, Greece, Hungary, Iceland, Ireland,
Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Republic of North
Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United
Kingdom.
1 Scope
This document specifies requirements for solid wood panels as specified in EN 12775 with a maximum
thickness of 80 mm for use in dry, humid and exterior conditions as specified in service classes 1, 2 and
3 of EN 1995-1-1.
Additional information on supplementary properties for certain applications is given in Annex A.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements 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 301, Adhesives, phenolic and aminoplastic, for load-bearing timber structures - Classification and
performance requirements
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 335, Durability of wood and wood-based products - Use classes: definitions, application to solid wood
and wood-based products
EN 384, Structural timber - Determination of characteristic values of mechanical properties and density
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 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
EN 1195, Timber structures - Test methods - Performance of structural floor decking
EN 1995-1-1, Eurocode 5: Design of timber structures - Part 1-1: General - Common rules and rules for
buildings
EN ISO 12460-3, Wood-based panels - Determination of formaldehyde release - Part 3: Gas analysis method
(ISO 12460-3)
EN 12775, Solid wood panels - Classification and terminology
EN 12871, Wood-based panels - Determination of performance characteristics for load bearing panels for
use in floors, roofs and walls
EN 13017-1, Solid wood panels - Classification by surface appearance - Part 1: Softwood
EN 13017-2, Solid wood panels - Classification by surface appearance - Part 2: Hardwood
EN 13183-2, Moisture content of a piece of sawn timber - Part 2: Estimation by electrical resistance method
EN 13354, Solid wood panels (SWP) - Bonding quality - Test method
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
EN 15416-3, Adhesives for load bearing timber structures other than phenolic and aminoplastic - Test
methods - Part 3: Creep deformation test at cyclic climate conditions with specimens loaded in bending shear
CEN/TS 635-4, Plywood - Classification by surface appearance - Part 4: Parameters of ability for finishing,
guideline
3 Terms and definitions and classes
3.1 Terms and definitions
For the purposes of this document, the terms and definitions given in EN 12775 and the following apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— IEC Electropedia: available at https://www.electropedia.org/
— ISO Online browsing platform: available at https://www.iso.org/obp
3.1.1
solid wood panel for use in dry conditions
panel intended for use in interior applications with no risk of wetting as specified in service class 1 of
EN 1995-1-1 and use class 1 of EN 335
Note 1 to entry: Service class 1 is characterized by a moisture content of the material corresponding to a
temperature of 20 °C and a relative humidity of the surrounding air exceeding 65 % for only a few weeks per year.
3.1.2
solid wood panel for use in humid conditions
panel intended for use in protected external applications as specified in service class 2 of EN 1995-1-1
and use class 2 of EN 335
Note 1 to entry: It is also capable of resisting weather exposure for short periods (e.g. when exposed during
construction).
Note 2 to entry: Service class 2 is characterized by a moisture content of the material corresponding to a
temperature of 20 °C and a relative humidity of the surrounding air exceeding 85 % for only a few weeks per year.
3.1.3
solid wood panel for use in exterior conditions
panel intended for use in unprotected external applications as specified in service class 3 of EN 1995-1-1
and use class 3 of EN 335
Note 1 to entry: It is also capable of withstanding exposure to weathering conditions and liquid water, or water
vapour in a damp but ventilated location where it can frequently attain a moisture content above 20 %.
Note 2 to entry: Service class 3 is characterized by a moisture content of the material higher than service class 2.
3.2 Classes for solid wood panels indicating their intended use
3.2.1 Technical classes for non-structural use
SWP/1 NS: Solid wood panel for non-structural use in dry conditions according to 3.1.1
SWP/2 NS: Solid wood panel for non-structural use in humid conditions according to 3.1.2
SWP/3 NS: Solid wood panel for non-structural use in exterior conditions according to 3.1.3
3.2.2 Technical classes for structural use
SWP/1 S: Solid wood panel for structural use in dry conditions according to 3.1.1
SWP/2 S: Solid wood panel for structural use in humid conditions according to 3.1.2
SWP/3 S: Solid wood panel for structural use in exterior conditions according to 3.1.3
3.2.3 Classes for structural use based on individually declared values
SWP/1 SD: Solid wood panel for structural use in dry conditions according to 3.1.1
SWP/2 SD: Solid wood panel for structural use in humid conditions according to 3.1.2
SWP/3 SD: Solid wood panel for structural use in exterior conditions according to 3.1.3
Technical classes are intended to simplify the use of standardized solid wood panels by providing
supporting data e.g. in EN 12369-3 as well as simplifying marking in accordance with EN 13986.
Nevertheless, products should not be limited by the requirements according to the technical classes.
Therefore, classes based on individually declared values may be used for such products. The calculation
of characteristic values should be performed according to EN 1058 or EN 14358.
4 Requirements
4.1 Dimensional tolerances
The tolerances for the nominal length, width and thickness, thickness within the panel, edge straightness
and squareness are given in Table 1. They relate to the moisture content at time of dispatch for large and
medium-sized panels according to EN 12775 and shall be determined in accordance with EN 324-1 and
EN 324-2 as appropriate.
Table 1 — Dimensional tolerances for both large and medium-sized panels
a b
Tolerances on Thickness Tolerance for
Tolerance on
Nominal length Tolerance within
nominal Edge straightness Squareness
a
and width a single panel
thickness
±2,0 mm 0,5 mm ±1,0 mm 1,0 mm/m 1,0 mm/m
a
Determined in accordance with EN 324-1.
b
Determined in accordance with EN 324-2.
4.2 Moisture content at dispatch
At time of dispatch the moisture content according to EN 322 shall be (8 ± 2) % for use in dry conditions,
(10 ± 3) % for use in humid conditions and (12 ± 3) % for use in exterior conditions.
If chemically or thermally treated wood is used, the equilibrium moisture content of the panels can differ
significantly to those made of natural wood. In that case, a deviation from the above mentioned
requirements concerning moisture content is possible.
If another moisture content is necessary, e.g. due to regi
...