CEN/TC 112 - Woodbased panels

On the basis of test results from wood-based panel products for structural purposes, this document specifies a method for the determination of:
-   characteristic 5-percentile values of mechanical properties under the assumption of a log-normal distribution of the test data according to EN 14358; and
-   characteristic mean values (50-percentile values) of physical properties under the assumption of a normal distribution of the test data according to EN 14358.
Test data can be determined from tests using the test methods outlined in the test standard EN 789 or other relevant test standard, performance standard or product standard normatively referring to EN 1058.
NOTE   See e.g. EN 1195 and EN 12871.
The statistical evaluation follows the principles of EN 1990:2023 , Annex D of EN 1995-1-1:2004  and of EN 14358:2016.

This document specifies the requirements for softboards as defined in EN 316, with a density from 230 kg/ m3 to 400 kg/ m3.
The values listed in this document relate to product properties but they are not characteristic values to be used in design calculations.
NOTE   Panels which are intended for use exclusively as thermal insulating products are covered by EN 13171.

This document specifies a procedure for determination of accelerated formaldehyde release from uncoated and coated wood-based panels using the gas analysis method. The procedure is also suitable for the testing of other materials (e.g. edge bands, floor coverings, foams, foils, laminated wood products, veneered wood products, coated wood products).

This document provides information on the characteristic values for use in designing structures incorporating wood-based panels. The characteristic values given are as defined in EN 1995-1-1.
This document includes the characteristic values of the mechanical properties and of the raw density for solid-wood panels complying with EN 13353:2022 technical classes SWP/1 S, SWP/2 S, SWP/3 S.

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.

This document specifies test methods for the determination of characteristics of melamine faced boards (MFB) in accordance with EN 14322.

This document specifies the surface requirements and dimensional tolerances for decorative melamine faced boards for interior use which are common for particleboards, extruded particleboards fibreboards and sandwich boards for furniture.
This document is not applicable to boards laminated with so called priming foils or finish foils and laminates according to EN 438-1 and EN 438-2.
This document is not applicable to laminate floor coverings.
Melamine faced wood-based boards in accordance with this document can be referred to as MFB.

This European Standard defines terms and specifies requirements and test methods for wood veneer floor coverings with multilayer built up for internal use. It gives guidance for the evaluation of conformity of the products to the requirements of this standard.
This European Standard is not applicable to multilayer parquet elements with a minimum top layer thickness of 2,5 mm. For these products EN 13489 applies.

This document defines wood-based panels for use in construction and specifies the relevant characteristics and the appropriate test methods to determine these characteristics for wood-based panels, unfaced, overlaid, veneered or coated:
-   for internal use as structural components in dry conditions ) ;
-   for internal (or protected external) use as structural components in humid conditions ) ;
-   for external use as structural components ) ;
-   for internal use as non-structural components in dry conditions1);
-   for internal (or protected external) uses as non structural components in humid conditions2);
-   for external use as non-structural components3);
-   for use as structural floor decking on joists in dry1) or humid2) or external3) conditions;
-   for use as structural roof decking on joists in dry1) or humid2) or external3) conditions;
-   for use as structural wall sheathing on studs in dry1) or humid2) or external3) conditions.
   It provides for the evaluation of conformity and the requirements for marking these products.
This document covers wood-based panels in the form of solid wood panels, LVL ) , plywood, OSB, particleboards (chipboards) either resin- or cement-bonded, wet process fibreboards (hardboards, medium boards, softboards) and dry process fibreboards (MDF) for use in construction. They may contain chemical agents to improve their reaction to fire and their resistance to biological attack, e.g. by fungi and insects.
This document is not intended to be applicable to wood-based panels for use in non-constructional applications.

ISO 12460-4:2016 specifies a desiccator method for the determination of the quantity of formaldehyde emitted from particleboard, fibreboard, plywood, oriented strand board (OSB) and wooden laminated flooring.

ISO 12460-5:2015 specifies an extraction method known as the "perforator method". It is used for the determination of the formaldehyde content of unlaminated and uncoated wood-based panels.

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.
This standard can be appropriately applied for all plywood, including overlaid and coated plywood, but it does not cover materials or processes used for overlaying or coating. Neither does it cover any materials or processes applied in relation to enhancement of biological durability.
NOTE 2   For additional guidance on biological durability and the potential need for preservative treatment, according to application and serviceability, reference can be made to 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.

This Technical Report gives guidance on the use of wood-based panels in structural applications as structural floor and roof decking on joists or structural wall sheathing on studs in accordance with EN 12871. It provides information on:
—   inspection at site;
—   transport and delivery;
—   handling;
—   stacking;
—   storage;
—   moisture content, conditioning and the effects of moisture;
—   cutting and machining;
—   selection;
—   installation.

This European Standard specifies methods for internal initial type testing (ITT) and internal factory production control (FPC) as well as external control of wood-based panels for their compliance with EN 13986 and other relevant product specifications. However, it may also apply, at the option of the manufacturer, to wood-based panels applied for non-construction purposes.
This European Standard is not applicable for the assessment of compliance with specifications of panels comprised in consignments. In such cases, EN 326-3 applies.
For internal factory production control, if required, methods for the assessment of conformity of batches and of production over longer periods are given.
For external control, if required, methods for the initial inspection of a factory and initial type testing of a product, and for the surveillance of the factory production control, are given.
In the factory production control small test pieces are used. The statistics of evaluation is based on normal distribution.

This European Technical Specification specifies the requirements for uncoated particleboards for use in dry conditions in non load-bearing applications with density below 600 kg/m3.
This Technical Specification applies to particleboard which is mostly homogenous and continuous in its composition and which does not contain hollow spaces, chambers or other type of cavities which can be encountered as honeycombs in sandwich panels or as tubes in extruded boards.
This Technical Specification does not give requirements for extruded particleboards (see EN 14755), flaxboards (see EN 15197) and sandwich panels.
NOTE   Typical applications for lightweight boards are in furniture and non-structural applications e.g. in doors, packaging.

This European Standard specifies:
-   concentrated load test and assessment methods for floor and roof decking;
-   soft body impact assessment methods and classification system for floors, roofs and walls.
This European Standard does not include racking testing or uniformly distributed loads as these are covered by testing according to EN 594 or calculation according to EN 1995-1-1 respectively.
This European Standard specifies the procedure for determining the performance characteristics through type testing, of load-bearing wood-based panels fitted on:
a)   structural joists for decking:
1)   in flooring applications in load categories A, B, C and D;
2)   in roof applications in load categories H and I;
for which type testing involves:
i)   punching shear under concentrated loading;
ii)   vertical soft body impact;
b)   studs for walling application for which type testing involves:
1)   pendular soft body impact.
Annex A (normative) lists modifications to EN 1195, particularly the contact area of the loading head that may be used for concentrated loading.
Annex B (informative) provides proposals for national performance requirements.
Annex C (informative) provides examples for a decking application in a floor and a roof.

This European Technical Specification defines terms, establishes a classification and specifies test methods for flat, factory made, non-structural, faced and unfaced sandwich boards for use in furniture manufacturing (SWB-F) for dry (service class 1) and humid conditions (service class 2). This European Technical Specification does not specify requirements.
Guidance is provided for the selection of board properties which are relevant for specific board applications.
This European Technical Specification is not applicable to products which are already covered by existing standards.

This European Standard specifies a method of determining in a constant climate both a duration of load factor and a creep factor for wood-based panels stressed in flatwise bending with and without a shear component. Details of an alternative but provisional method employing medium sized test pieces are given in Annex A; this method can also be used for test pieces loaded under varying climates.
NOTE   The duration of load factor is necessary to modify the characteristic strength values obtained in short-term structural tests in order to derive long-term values. The creep factor obtained in the test is used to predict a long-term deflection from the initial elastic deflection.

The standard specifies methods for measuring the thickness, length and width of test pieces of wood-based panels.

This European Standard specifies, for plywood panels of any composition, symmetrical or not, a calculation method to derive some mechanical properties (strength and stiffness in bending, tension, compression, panel and planar shear) as well as density from the wood compounding the layers.
NOTE   Usually, the lay-up of the panels is symmetrical but, very often, the surface appearance of the face and the surface appearance of the back face differ, hence a difference between the mechanical properties of the respective veneers. Therefore, in this case, the composition is not mechanically symmetrical and a symmetry independent calculation method is needed.
Provided that structural characteristic values are taken for the layers, the resulting values for the panels can be used as characteristic values as required by EN 1995-1-1.
Conversely, Annex A defines the procedures to derive the veneer properties, in bending, tension and compression, either from testing panels according to EN 789 and EN 1058 or from timber testing according to EN 408 or from imposed values defined in EN 338.
Annex B provides practical spreadsheets, which are applications of the equations in the main part of this standard.
Annex C provide an example for the calculation of bending strength, in accordance with Annex B.

This European Standard specifies a method for the determination of the resistance of fibreboards and particleboards to axial withdrawal of screws.

This European Standard provides information on the characteristic values for use in designing structures incorporating wood-based panels. The characteristic values given in this standard are to be used in accordance with  EN 1995-1-1.
When utilizing the classification system for derivation of plywood characteristic values, this part of this standard can only be applied with reference to EN 636.
This part of this standard includes the characteristic values of the mechanical properties for plywood complying with EN 636 in bending, tension, compression, panel shear and planar shear. EN 636 classifies bending properties into two sets of classes, one for stiffness and another for strength. Stiffness and strength in tension and compression are related to the same properties in bending.
For shear properties, fixed values determined by correlation to density are provided.
Where optimised values are needed, the characteristic values are determined directly by testing in accordance with EN 789 and EN 1058 or by combination of testing according to the latter two standards and calculation according to prEN 14272.
This part of this standard applies to panels complying with the three following conditions:
-   5 layers or more and 6 mm overall thickness and more;
-    the ratio of the cumulative thickness of veneers in alternate directions does not exceed 2,5;
-    wood species with a mean density greater than 350 kg/m3 and not exceeding 750 kg/m3.

This European Standard specifies the requirements for flat-pressed or calendar-pressed unfaced particleboards as defined in EN 309.
NOTE 1   This standard is called up in EN 13986 for construction applications. Products specified in this standard are referred to in EN 13986 as resin-bonded particleboards.
The values listed in this standard relate to product properties, but they are not characteristic values to be used in design calculations.
NOTE 2   Such characteristic values (e.g. for use in design calculation in EN 1995-1-1) are given either in EN 12369-1 or derived by testing according to EN 789, EN 1058 and ENV 1156.
Additional information on supplementary properties for certain applications is also given.
NOTE 3   Particleboards in accordance with this standard may be referred to as P1 to P7-boards.
Boards of type P4 to P7 are intended for use in design and construction of load-bearing or stiffening building elements, e.g. walls, flooring, roofing and I-beams (see EN 1995-1-1 and/or performance standards).
This standard does not apply to extruded particleboards and flaxboards, which are standardised in EN 14755 and EN 15197 respectively.

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 be used in design calculations.

This European Standard gives the definition, classification and symbols for wood fibreboards.

This document gives definitions, a classification and specifies the requirements for Laminated Veneer Lumber (LVL) for general purposes or for use in construction in dry, humid or exterior conditions.
NOTE   This standard will be called up in EN 13986 for construction applications.
Annex A "Evaluation of the bonding quality of laminated veneer lumber" is normative
Information on supplementary properties is given in Annex B.

This European Standard specifies a test method for determining the bonding quality of single-layer and multi-layer solid wood panels by a shear test.

This European Standard specifies the requirements for flaxboards for general purposes, non-load bearing applications and interior fitments in dry conditions and for flaxboards for non-load bearing applications for use in humid conditions.
NOTE 1   Dry conditions are defined in terms of service class 1 of EN 1995-1-1 which is characterized by the 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 only suitable for use in biological hazard class 1 of EN 335 3. Humid conditions are defined in terms of service class 2 of EN 1995-1-1, which is 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 85 % for a few weeks per year.
NOTE 2   This standard will be referred to in EN 13986, as far as construction applications are concerned.
NOTE 3   Boards in accordance with this standard may be referred to as FB1, FB2, FB3 or FB4 boards.
The values listed in this standard relate to product properties but they are not characteristic values to be used for design calculations.

This European Standard for cement-bonded particleboards specifies the requirements for particleboards bonded with Ordinary Portland Cement (OPC) for use in dry, humid ) and external ) conditions. Additional information on supplementary properties for certain applications is also given.
NOTE 1   Boards made with cement other than OPC may comply with this Standard if test values are declared according to EN 13986. However, further parts of EN 634 may be developed in the future to cover other types of cement or other materials.
NOTE 2   Cement-bonded particleboard does not contain any asbestos fibre.

This document gives guidance for the end user on the selection of plywood for application of various finishes for use in dry, humid, or exterior end-use conditions.

This document gives guidance on the selection of plywood for use in the different use classes as defined in EN 335 1.
The guidance given takes into account the natural durability classification for solid timber (see EN 350 2) together with other factors specific for plywood.
It does not consider durability against chemico-physical factors, such as weathering, nor does it consider the biological durability of the adhesive.
Guidance on precautionary measures for use is also given.

This European Standard applies to Oriented Strand Boards (OSB). It defines terms, establishes a
classification and specifies requirements.
The values listed in this European Standard relate to product properties but they are not characteristic values to be used in design calculations.
NOTE   Test methods for determination of mechanical properties for structural purposes are given in EN 789.
Determination of characteristic values of mechanical properties and density for structural purposes is given in EN 1058. Design characteristic values for OSB are given in EN 12369-1.
Information on supplementary properties is given in Annex C.

This European Standard specifies the requirements for non load-bearing extruded particleboards for use in dry conditions.
NOTE   Dry conditions are defined in terms of 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 only suitable in biological hazard class 1 of EN 335-3.

TC - Modification to Table 3

This document specifies methods for determining the bonding quality of veneer plywood, blockboard and laminboard by shear testing.
The relevant requirements are specified in EN 314 2.
This document is suitable for insulating core plywood as defined in Annex B.
Annex A is normative. Annex B is informative.

This Technical Specification specifies small-scale test methods for estimating the following mechanical properties of wood-based panels:
-   indicative planar shear strength (sometimes referred to as block shear);
-   indicative panel shear strength;
-   indicative strength and modulus of elasticity in tension in the plane of the panel;
-   indicative strength in compression in the plane of the panel.
Reference should be made to EN 310 for bending properties. For plywood, EN 314 1 may also be used as an indicator of planar shear strength.
These test methods are intended for indicative purposes only and should not be used as a means of determining structural design values. They may not be suitable for all panel types. They may be used as a means of supporting quality control procedures for structural panels, if correlations with EN 789 test results can be established (CEN Technical Report in preparation).

This document gives a definition and a classification for particleboards.

This European Standard specifies a chamber method with three options of test chambers for the determination of the formaldehyde emission from wood-based panels in terms of the steady-state concentration in a climate chamber under defined conditions, which relate to typical conditions in real-life. This chamber method can also be applied to the estimation of formaldehyde concentrations under various conditions in practice, by the use of mathematical models.

This European Standard specifies the requirements for hardboards as defined in EN 316.  The values listed in this standard relate to product properties but they are not characteristic values to be used in design calculation.

This European Standard specifies the requirements for medium boards according to EN 316.  The values listed in this standard relate to product properties but they are not characteristic values to be used in design calculations.

This European Standard specifies methods for the verification of compliance of one or more properties of an isolated lot of wood-based panels with the requirements of the relevant EN specification standards. Different sample sizes are given depending on wether or not the production is controlled according to EN 326-2.
For panels, the production of which is controlled in accordance to EN 326-2 this European Standard can be used in case of a dispute. It is not applicable for the factory production control. For these purposes, EN 326-2 applies.
In this standard, verification of compliance is based on the testing of small test pieces.

This European Standard provides the performance specifications and requirements for wood-based panels used in floating floors.

This European Standard specifies the requirements for some properties which are common for all uncoated fibreboard types according to EN 316.

This European Standard specifies test methods for loading a floating floor with static concentrated point loads, alternating loads and dynamic impact loads for determining the values of the resulting deflections. NOTE: These test methods form part of the basis for classification of floating floor constructions. The requirements, i.e. load values, number of load cycles, and deformation limits for the different load categories, are given in prEN (WI 00 112 134).

This European Standard specifies a method for the determination of strength, stiffness, creep and duration of load when wood-based panels are loaded in edgewise bending.
It is not applicable to extruded panels.

This European Standard specifies a test method for determining the withdrawal capacity of nails, screws and staples inserted into wood-based panels.
This test method can be used for any combination of fastener type and wood-based panel product.
NOTE   This method differs from EN 320 which characterises fibreboards in terms of their resistance to the withdrawal load of only a single type of screw.

This European Standard specifies a method of assessing the surface soundness of coated wood-based panels and uncoated particle boards, wet and dry process fibreboards and cement bonded particle boards.
NOTE   The grid patterned face of wet processed hardboards cannot be tested according to this standard.

This European Standard specifies a method for the determination of dimensional changes in wood-based panels, due to changes in the relative humidity of the air.

This European Standard specifies a test method for the determination of the moisture resistance of wood-based
panels under cyclic test conditions.

This European standard gives a classification for solid wood panels and defines  important terms used with solid wood panels.