SIST EN 927-2:2023
(Main)Paints and varnishes - Coating materials and coating systems for exterior wood - Part 2: Performance specification
Paints and varnishes - Coating materials and coating systems for exterior wood - Part 2: Performance specification
This document addresses performance criteria for coating systems on exterior wood. Performance requirements are specified according to three categories of end use (defined in EN 927 1) in terms of two mandatory tests, namely natural weathering performance testing carried out in accordance with EN 927 3, and water permeability in accordance with EN 927 5. Additional optional tests (non-mandatory) are tabled which can be used by suppliers, or for specification purposes, to provide additional information, to a standardized format, on aspects of performance relevant to specific situations. The majority of test methods are drawn from EN 927 (all parts), but where relevant additional tests from other national and international sources are used.
Requirements for claiming conformity with this document are defined and provide flexibility for different situations and can also provide a basis for certification.
Beschichtungsstoffe - Beschichtungsstoffe und Beschichtungssysteme für Holz im Außenbereich - Teil 2: Leistungsanforderungen
Dieses Dokument legt Leistungskriterien für Beschichtungssysteme auf Holz im Außenbereich fest. Die Leistungsanforderungen werden anhand der Ergebnisse zweier Pflichtprüfungen – der Freibewitterungs¬prüfung nach EN 927 3 und Wasserdurchlässigkeitsprüfung nach EN 927 5 – nach den drei (in EN 927 1 angegebenen) Anwendungskategorien festgelegt. Es werden zusätzliche freiwillige (nicht verpflichtende) Prüfungen in Tabellenform angegeben, die von Anbietern oder für Spezifikationszwecke angewendet werden können, um auf genormter Grundlage zusätzliche Informationen über Leistungsaspekte bei speziellen Anwendungen zu erhalten. Der Großteil der Prüfverfahren stammt aus der Normenreihe EN 927 (alle Teile), ggf. werden jedoch auch zusätzliche Prüfungen aus anderen nationalen und internationalen Quellen angewendet.
Es werden Anforderungen für das Erheben des Anspruches auf Konformität mit diesem Dokument festgelegt, um Flexibilität in unterschiedlichen Situationen sowie eine Grundlage für die Zertifizierung zu bieten.
Peintures et vernis - Produits de peinture et systèmes de peinture pour le bois en extérieur - Partie 2: Spécifications de performance
Le présent document traite des critères de performance s’appliquant aux systèmes de peinture pour le bois en extérieur. Les exigences de performance sont spécifiées selon trois catégories d’usage final (définies dans l’EN 927 1) en termes de deux essais obligatoires, à savoir l’essai de vieillissement naturel réalisé conformément à l’EN 927 3 et l’essai de perméabilité à l’eau réalisé conformément à l’EN 927 5. Les essais supplémentaires facultatifs (non obligatoires) sont indiqués dans des tableaux et peuvent être utilisés par les fournisseurs, ou à des fins de spécification, pour fournir des informations supplémentaires, selon un format normalisé, sur des aspects des performances pertinents pour des situations spécifiques. La majorité des méthodes d’essai sont extraites de la série EN 927 (toutes les parties) mais, le cas échéant, des essais supplémentaires pertinents issus d’autres sources nationales et internationales sont utilisés.
Les exigences relatives à la déclaration de conformité au présent document sont définies, offrent une certaine souplesse pour différentes situations et peuvent également servir de base de certification.
Barve in laki - Premazi in premazni sistemi za zaščito lesa za zunanjo uporabo - 2. del: Specifikacija lastnosti
Ta del standarda EN 927 obravnava merila lastnosti za premazne sisteme za zunanjo zaščito lesa. Zahteve glede lastnosti so določene v skladu s tremi kategorijami končne uporabe (opredeljeno v standardu EN 927-1) v zvezi z dvema obveznima preskusoma, tj. preskušanje lastnosti naravnih vremenskih vplivov v skladu s standardom EN 927-3 in prepustnost vode v skladu s standardom EN 927-5. Predlagani so dodatni poljubni preskusi (neobvezni), ki jih lahko uporabijo dobavitelji, ali za namene specifikacije, da se zagotovijo dodatne informacije, v standardizirani obliki, in sicer v zvezi z vidiki lastnosti, ustreznih za posebne primere. Večina preskusnih metod izhaja iz standarda EN 927 (vsi deli), kjer pa je to primerno, so uporabljeni dodatni preskusi iz drugih nacionalnih in mednarodnih virov.
Določene so zahteve za zagotavljanje skladnosti s standardom FprEN 927-2, ki zagotavljajo prilagodljivost za različne primere in jih je mogoče uporabiti kot podlago za certificiranje.
General Information
Relations
Overview
EN 927-2:2022 - published by CEN - is the European performance specification for paints and varnishes used as coating materials and coating systems for exterior wood. The standard defines mandatory performance criteria and a standardized reporting format for suppliers, specifiers and testing laboratories. Its primary aim is to give repeatable, comparable assessment of external durability so coating systems can be selected and certified for different end-use categories.
Key topics and technical requirements
Scope and purpose
- Performance requirements are tied to three end‑use categories (defined in EN 927-1): stable, semi-stable, and non-stable substrates.
- Provides a framework for claiming conformity and supports certification or procurement specifications.
Mandatory tests
- Natural weathering according to EN 927-3 (flat pine panels, Pinus sylvestris) - used to assess external durability and key performance criteria.
- Water permeability according to EN 927-5 - evaluates liquid water resistance of coating systems.
Optional (non‑mandatory) tests
- A table of additional tests allows suppliers or specifiers to add performance information for particular situations. Examples include: artificial weathering (EN 927-6), knot staining (EN 927-7), adhesion after water exposure (CEN/TS 927-8, 927-9), blocking (EN 927-10), microfoam (EN 927-11), UV transmittance (CEN/TS 927-12), impact resistance (EN 927-13), tensile properties (EN 927-14), fungal and algal resistance (EN 16492), tannin staining and end‑grain sealing assessments.
- Optional tests are reported in a standardized format as described in the document.
Testing profiles and reporting
- Test profiles are aligned to the three end‑use categories to reflect expected wood movement and climatic exposure.
- The standard describes how results should be expressed and how conformity claims can be made with flexibility for different situations.
Applications and who uses it
- Manufacturers and R&D teams - product development, quality control and comparative performance testing.
- Specification writers, architects and contractors - choosing appropriate exterior wood coatings for façades, cladding, joinery and external timber elements.
- Testing laboratories and certification bodies - performing EN 927 series tests and issuing conformity or certification reports.
- Procurement and compliance teams - including performance requirements in tenders and supplier claims.
Related standards
- EN 927 series (Part 1, 3, 5, 6, 7, 10–14), CEN/TS 927-8/9/11/12, EN ISO 4618, EN 16492 and others referenced in EN 927-2:2022 for specific test methods and terminology.
Keywords: EN 927-2:2022, exterior wood coatings, performance specification, natural weathering, water permeability, coating systems, CEN.
Standards Content (Sample)
SLOVENSKI STANDARD
01-februar-2023
Nadomešča:
SIST EN 927-2:2014
Barve in laki - Premazi in premazni sistemi za zaščito lesa za zunanjo uporabo - 2.
del: Specifikacija lastnosti
Paints and varnishes - Coating materials and coating systems for exterior wood - Part 2:
Performance specification
Beschichtungsstoffe - Beschichtungsstoffe und Beschichtungssysteme für Holz im
Außenbereich - Teil 2: Leistungsanforderungen
Peintures et vernis - Produits de peinture et systèmes de peinture pour le bois en
extérieur - Partie 2: Spécifications de performance
Ta slovenski standard je istoveten z: EN 927-2:2022
ICS:
71.100.50 Kemikalije za zaščito lesa Wood-protecting chemicals
87.040 Barve in laki Paints and varnishes
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EN 927-2
EUROPEAN STANDARD
NORME EUROPÉENNE
November 2022
EUROPÄISCHE NORM
ICS 87.040 Supersedes EN 927-2:2014
English Version
Paints and varnishes - Coating materials and coating
systems for exterior wood - Part 2: Performance
specification
Peintures et vernis - Produits de peinture et systèmes Beschichtungsstoffe - Beschichtungsstoffe und
de peinture pour le bois en extérieur - Partie 2: Beschichtungssysteme für Holz im Außenbereich - Teil
Spécifications de performance 2: Leistungsanforderungen
This European Standard was approved by CEN on 16 October 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, Türkiye 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 927-2:2022 E
worldwide for CEN national Members.
Contents Page
European foreword . 3
Introduction . 5
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 7
4 Performance tests – Testing profiles . 7
5 Test overview . 9
5.1 Natural weathering. 9
5.1.1 General . 9
5.1.2 Performance criteria . 9
5.1.3 Exposure conditions . 10
5.1.4 Natural weathering – Alternative substrates . 10
5.1.5 Natural weathering – Alternative test piece . 10
5.2 Existing test methods . 10
5.2.1 Water permeability . 10
5.2.2 Artificial weathering . 10
5.2.3 Knot staining . 10
5.2.4 Wet adherence (double X-cut test) . 11
5.2.5 Wet adherence (pull-off test) . 11
5.2.6 Blocking . 11
5.2.7 Microfoam . 11
5.2.8 UV transmittance . 11
5.2.9 Impact test . 11
5.2.10 Tensile properties. 11
5.2.11 Film extensibility. 12
5.2.12 Tannin staining . 12
5.2.13 Fungal and algal growth . 12
6 Summary of test methods and reporting convention . 12
7 Expression of results and claiming conformity – Scope and reporting convention . 14
European foreword
This document (EN 927-2:2022) has been prepared by Technical Committee CEN/TC 139 “Paints and
varnishes”, 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 May 2022, and conflicting national standards shall be
withdrawn at the latest by May 2022.
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 927-2:2014.
The following significant technical changes have been made with respect to EN 927-2:2014:
a) test profiles for the three main end-use categories (as specified in EN 927-1) have been updated to
include additional test methods;
b) Existing test methods (5.2) have been updated to include additional methods and 5.3 (Test methods
in preparation) has been deleted.
EN 927 consists of the following parts under the general title Paints and varnishes — Coating materials
and coating systems for exterior wood,
— Part 1: Classification and selection
— Part 2: Performance specification
— Part 3: Natural weathering test
— Part 5: Assessment of the liquid water permeability
— Part 6: Exposure of wood coatings to artificial weathering using fluorescent UV lamps and water
— Part 7: Assessment of knot staining resistance of wood coatings
— Part 8: Determination of the adherence of paint on wood by means of a double X-cut test
— Part 9: Determination of pull-off strength after water exposure
— Part 10: Resistance to blocking of paints and varnishes on wood
— Part 11: Assessment of air inclusions/microfoam in coating films
— Part 12: Ultraviolet and visible radiation transmittance
— Part 13: Assessment of resistance to impact of a coating on a wooden substrate
— Part 14: Determination of tensile properties of coating films
This document has been published as a CEN/TS in 2020.
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, Türkiye and the United
Kingdom.
Introduction
This document is one of a number of parts of EN 927. EN 927-1 addresses the issue of terminology for
the wide variety of exterior coatings for wood that are now available. EN 927-1 also provides a
framework for communicating information on the suitability of a coating for particular specific end-use
categories. Improved communication is beneficial in the removal of technical barriers to trade. However,
there remains the problem of comparing products tested, or likely to be exposed, in different climatic
regions, and the relevance of tests for different categories of end-use. This document addresses these
issues and sets a limited number of mandatory performance criteria combined with optional tests that
can provide additional information to a standardized format.
1 Scope
This document addresses performance criteria for coating systems on exterior wood. Performance
requirements are specified according to three categories of end use (defined in EN 927-1) in terms of two
mandatory tests, namely natural weathering performance testing carried out in accordance with EN 927-
3, and water permeability in accordance with EN 927-5. Additional optional tests (non-mandatory) are
tabled which can be used by suppliers, or for specification purposes, to provide additional information,
to a standardized format, on aspects of performance relevant to specific situations. The majority of test
methods are drawn from EN 927 (all parts), but where relevant additional tests from other national and
international sources are used.
Requirements for claiming conformity with this document are specified and provide flexibility for
different situations and can also provide a basis for certification.
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 927-1:2013, Paints and varnishes - Coating materials and coating systems for exterior wood - Part 1:
Classification and selection
EN 927-3:2019, Paints and varnishes - Coating materials and coating systems for exterior wood - Part 3:
Natural weathering test
EN 927-5, Paints and varnishes - Coating materials and coating systems for exterior wood - Part 5:
Assessment of the liquid water permeability
EN 927-6, Paints and varnishes - Coating materials and coating systems for exterior wood - Part 6: Exposure
of wood coatings to artificial weathering using fluorescent UV lamps and water
EN 927-7, Paints and varnishes - Coating materials and coating systems for exterior wood - Part 7:
Assessment of knot staining resistance of wood coatings
CEN/TS 927-8, Paints and varnishes - Coating materials and coating systems for exterior wood - Part 8:
Determination of the adhesion on wood after water exposure by a double-X-cut test
CEN/TS 927-9, Paints and varnishes - Coating materials and coating systems for exterior wood - Part 9:
Determination of pull-off strength after water exposure
EN 927-10, Paints and varnishes - Coating materials and coating systems for exterior wood - Part 10:
Resistance to blocking of paints and varnishes on wood
EN 927-11, Paints and varnishes - Coating materials and coating systems for exterior wood - Part 11:
Assessment of air inclusions/microfoam in coating films
CEN/TS 927-12:— , Paints and varnishes - Coating materials and coating systems for exterior wood - Part
12: Ultraviolet and visible radiation transmittance
Under preparation. Stage at the time of publication: FprCEN/TS 927-12:2022.
EN 927-13, Paints and varnishes - Coating materials and coating systems for exterior wood - Part 13:
Assessment of resistance to impact of a coating on a wooden substrate
EN 927-14:— , Paints and varnishes - Coating materials and coating systems for exterior wood - Part 14:
Determination of tensile properties of coating films
EN 16492, Paints and varnishes - Evaluation of the surface disfigurement caused by fungi and algae on
coatings
CEN/TS 16360, Paints and varnishes - Coating materials and coating systems for exterior wood -
Assessment of film extensibility by indentation of a coating on a wooden substrate
CEN/TS 16498, Paints and varnishes - Coating materials and coating systems for exterior wood -
Assessment of tannin staining
CEN/TS 16969, Paints and varnishes - Coating materials and coating systems for exterior wood -
Assessment of end grain sealing performance
EN ISO 4618, Paints and varnishes - Terms and definitions (ISO 4618)
EN ISO 7783, Paints and varnishes - Determination of water-vapour transmission properties - Cup method
(ISO 7783)
3 Terms and definitions
For the purposes of this document, the terms and definitions given in EN 927-1 and EN ISO 4618 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 brows
...
Frequently Asked Questions
SIST EN 927-2:2023 is a standard published by the Slovenian Institute for Standardization (SIST). Its full title is "Paints and varnishes - Coating materials and coating systems for exterior wood - Part 2: Performance specification". This standard covers: This document addresses performance criteria for coating systems on exterior wood. Performance requirements are specified according to three categories of end use (defined in EN 927 1) in terms of two mandatory tests, namely natural weathering performance testing carried out in accordance with EN 927 3, and water permeability in accordance with EN 927 5. Additional optional tests (non-mandatory) are tabled which can be used by suppliers, or for specification purposes, to provide additional information, to a standardized format, on aspects of performance relevant to specific situations. The majority of test methods are drawn from EN 927 (all parts), but where relevant additional tests from other national and international sources are used. Requirements for claiming conformity with this document are defined and provide flexibility for different situations and can also provide a basis for certification.
This document addresses performance criteria for coating systems on exterior wood. Performance requirements are specified according to three categories of end use (defined in EN 927 1) in terms of two mandatory tests, namely natural weathering performance testing carried out in accordance with EN 927 3, and water permeability in accordance with EN 927 5. Additional optional tests (non-mandatory) are tabled which can be used by suppliers, or for specification purposes, to provide additional information, to a standardized format, on aspects of performance relevant to specific situations. The majority of test methods are drawn from EN 927 (all parts), but where relevant additional tests from other national and international sources are used. Requirements for claiming conformity with this document are defined and provide flexibility for different situations and can also provide a basis for certification.
SIST EN 927-2:2023 is classified under the following ICS (International Classification for Standards) categories: 71.100.50 - Wood-protecting chemicals; 87.040 - Paints and varnishes. The ICS classification helps identify the subject area and facilitates finding related standards.
SIST EN 927-2:2023 has the following relationships with other standards: It is inter standard links to SIST EN 927-2:2014. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
You can purchase SIST EN 927-2:2023 directly from iTeh Standards. The document is available in PDF format and is delivered instantly after payment. Add the standard to your cart and complete the secure checkout process. iTeh Standards is an authorized distributor of SIST standards.
이 기사는 SIST EN 927-2:2023 표준에 대한 내용을 다룬다. 이 표준은 외부 목재에 사용되는 코팅 재료와 코팅 시스템에 대한 성능 명세를 다루고 있다. 성능 요구사항은 EN 927-1에서 정의된 세 가지 최종 사용 카테고리에 따라 지정되며, EN 927-3에 따라 수행되는 자연 기후 테스트 및 EN 927-5에 따라 수행되는 수증기 투과성 테스트로 구성된다. 특정 상황에 대한 성능과 관련된 추가 정보를 표준화된 형식으로 제공하기 위해 공급 업체가 사용하거나 명세 목적으로 사용될 수 있는 선택적인 테스트(비의무)도 제시된다. 대부분의 시험 방법은 EN 927(모든 파트)에서 가져왔지만, 필요에 따라 다른 국가 및 국제 소스에서 가져온 추가적인 시험도 사용된다. FprEN 927-2와의 일치를 주장하기 위한 요구 사항이 정의되어 있으며, 다른 상황에 대한 유연성을 제공하고 인증의 기초를 제공할 수 있다고 언급되어 있다.
この記事は、SIST EN 927-2:2023の基準について取り扱っています。この基準は、外部の木材に使用される塗装材料と塗装システムの性能仕様について述べています。性能要件は、EN 927-1で定義された3つの最終使用カテゴリに基づいて指定され、EN 927-3で行われる自然風化性能試験とEN 927-5で行われる浸透性試験の2つの必須試験から構成されます。特定の状況に関連するパフォーマンスの追加情報を、標準化された形式で提供するためのオプションのテストも提供されています。ほとんどの試験方法は、EN 927（すべてのパート）から取り入れられていますが、関連する場合には他の国内および国際的なソースからの追加のテストも使用されています。 FprEN 927-2との一致を主張するための条件が定義されており、さまざまな状況に対して柔軟性を提供し、認証の基礎となることも述べられています。
This article discusses the performance specifications outlined in the SIST EN 927-2:2023 standard for coating materials and coating systems used on exterior wood. The standard categorizes performance requirements based on three end-use categories and includes two mandatory tests: natural weathering performance testing and water permeability testing. In addition to these mandatory tests, there are optional tests that suppliers can use to provide additional information on performance. The majority of the test methods are derived from EN 927, but additional tests from other sources may also be used. The article also mentions that the standard provides requirements for claiming conformity and allows for flexibility in different situations, as well as serving as a basis for certification.
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.
Loading comments...