EN 12037:2022
(Main)Wood preservatives - Field test method for determining the relative protective effectiveness of a wood preservative exposed out of ground contact - Horizontal lap-joint method
Wood preservatives - Field test method for determining the relative protective effectiveness of a wood preservative exposed out of ground contact - Horizontal lap-joint method
This document specifies a test method for wood preservatives that are intended for use in wood to be exposed to the weather out of contact with the ground without the additional protection of a surface coating.
The method is applicable to the testing of commercial or experimental preservatives applied by techniques appropriate to commercial practice. The method is applicable to chemical products used individually or in combination to prevent the development of decay and/or - optional - the development of disfiguring organisms in wood and, where suitable, in wood-based materials.
NOTE 1 The method can also be used to test other treated wood species and naturally durable timbers. It can be adapted for testing the field performance of other wood-based systems and treatments designed to enhance durability, for example treated or untreated wood based composites, timber treated with non-biocidal systems, chemically modified or heat treated timber. Guidance on samples and sampling of naturally durable wood and modified wood is found in EN 350.
NOTE 2 Although the test is used to assess decay, it is possible to use the method to additionally assess stain or each separately when relevant.
Holzschutzmittel - Freilandprüfung zur Bestimmung der relativen Wirksamkeit eines Holzschutzmittels ohne Erdkontakt - Verfahren mit horizontaler Überblattung (Lap-Joint)
Dieses Dokument legt ein Prüfverfahren für Holzschutzmittel fest, die zur Behandlung von Holz vorgesehen sind, das ohne Erdkontakt und ohne zusätzlichen Schutz durch eine Oberflächenbeschichtung der Witterung ausgesetzt werden soll.
Das Verfahren ist zur Prüfung handelsüblicher oder zur Entwicklung neuer Holzschutzmittel anzuwenden, die mit für die gewerbliche Praxis geeigneten Verfahrensweisen auf-/eingebracht werden. Das Verfahren ist für chemische Erzeugnisse anzuwenden, die einzeln oder in Kombination verwendet werden, um die Entwicklung von Fäulnis in Holz und/oder - wahlweise - die Entwicklung von verfärbenden Organismen in Holz und, falls zutreffend, in Holzprodukten, zu verhindern.
ANMERKUNG 1 Das Verfahren kann auch zur Prüfung von anderen behandelten Holzarten und natürlich dauerhaften Nutzhölzern angewendet werden. Es kann angepasst zur Prüfung der Gebrauchstauglichkeit im Freiland von anderen Systemen auf der Grundlage von Holz und von Behandlungsverfahren angewendet werden, die dafür ausgelegt sind, die Dauerhaftigkeit zu erhöhen, z. B. bei behandelten oder unbehandelten Holzverbundwerkstoffen, Nutzholz, das mit biozidfreien Systemen behandelt wurde, und chemisch modifiziertem oder wärmebehandeltem Nutzholz. Eine Anleitung zu Proben und Probenahme von natürlich dauerhaftem Holz und modifiziertem Holz ist in EN 350 zu finden.
ANMERKUNG 2 Obwohl die Prüfung zur Bewertung von Fäulnis angewendet wird, kann dieses Verfahren, falls zutreffend, zur zusätzlichen Bewertung der Verfärbung oder zur getrennten Bewertung von Fäulnis und Verfärbung eingesetzt werden.
Produits de préservation du bois - Méthode d'essai sur le terrain pour déterminer l'efficacité protectrice relative d'un produit de préservation du bois sans contact avec le sol - Méthode avec un assemblage à joint superposé
Le présent document énonce une méthode d'essai de produits de préservation du bois destinés au bois exposé aux intempéries hors de contact avec le sol, sans protection supplémentaire par un revêtement de surface.
La méthode est applicable à l'essai des produits de préservation commerciaux ou expérimentaux appliqués par des techniques appropriées utilisées dans la pratique. La méthode s'applique aux produits chimiques utilisés individuellement ou en combinaison pour empêcher le développement de pourriture et/ou — en option — d'organismes de décoloration dans le bois et, le cas échéant, dans les matériaux dérivés du bois.
NOTE 1 La méthode peut aussi être utilisée pour réaliser des essais sur d'autres essences de bois traités et sur des bois naturellement durables. Elle peut être adaptée pour tester les performances in situ d'autres systèmes à base de bois et des traitements destinés à accroître la durabilité, par exemple des composites à base de bois traités ou non traités, des bois traités avec des systèmes non-biocides, des bois modifiés chimiquement ou traités à la chaleur. Des conseils sur les échantillons et l'échantillonnage du bois naturellement durable et du bois modifié sont donnés dans le document EN 350.
NOTE 2 Bien que l'essai soit destiné à évaluer la pourriture, il est possible d'utiliser la méthode pour évaluer également la décoloration, ou les évaluer chacune séparément si c'est utile.
Zaščitna sredstva za les - Terenska preskusna metoda za ugotavljanje relativne preventivne učinkovitosti biocidnega proizvoda za zaščito lesa nad zemljo - Metoda z vodoravnim preklopnim spojem
Ta dokument opisuje preskusno metodo zaščitnih sredstev za les, ki se uporabljajo za les, izpostavljen vremenskim vplivom nad zemljo brez dodatne zaščite s površinskim premazom.
Metoda se uporablja za preskušanje komercialnih in eksperimentalnih zaščitnih sredstev, ki se jih nanese z metodami, primernimi za komercialno prakso. Metoda se uporablja za kemične izdelke, ki se uporabljajo posamezno ali v kombinaciji in preprečujejo razvoj gnilobe in/ali tudi razvoj organizmov, ki uničujejo les oziroma izdelke na osnovi lesa.
OPOMBA 1: Metodo je mogoče uporabiti tudi za preskušanje drugih obdelanih vrst lesa in naravno obstojnega lesa. Prilagoditi jo je mogoče za preizkušanje terenske učinkovitosti drugih sistemov in obdelav na osnovi lesa, namenjenih povečanju vzdržljivosti, na primer kompozitov na osnovi obdelanega ali neobdelanega lesa, lesa, obdelanega z nebiocidnimi sistemi, kemično modificiranega ali toplotno obdelanega lesa.
OPOMBA 2: Čeprav se preskus uporablja za oceno gnilobe, je metodo mogoče uporabiti dodatno tudi za oceno madežev ali če je treba, vsakega posebej.
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
01-marec-2023
Nadomešča:
SIST-TS CEN/TS 12037:2005
Zaščitna sredstva za les - Terenska preskusna metoda za ugotavljanje relativne
preventivne učinkovitosti biocidnega proizvoda za zaščito lesa nad zemljo -
Metoda z vodoravnim preklopnim spojem
Wood preservatives - Field test method for determining the relative protective
effectiveness of a wood preservative exposed out of ground contact - Horizontal lap-joint
method
Holzschutzmittel - Freilandprüfung zur Bestimmung der relativen Wirksamkeit eines
Holzschutzmittels ohne Erdkontakt - Verfahren mit horizontaler Überblattung (Lap-Joint)
Produits de préservation du bois - Méthode d'essai sur le terrain pour déterminer
l'efficacité protectrice relative d'un produit de préservation du bois sans contact avec le
sol - Méthode avec un assemblage à joint superposé
Ta slovenski standard je istoveten z: EN 12037:2022
ICS:
71.100.50 Kemikalije za zaščito lesa Wood-protecting chemicals
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EN 12037
EUROPEAN STANDARD
NORME EUROPÉENNE
November 2022
EUROPÄISCHE NORM
ICS 71.100.50 Supersedes CEN/TS 12037:2003
English Version
Wood preservatives - Field test method for determining
the relative protective effectiveness of a wood
preservative exposed out of ground contact - Horizontal
lap-joint method
Produits de préservation du bois - Méthode d'essai sur Holzschutzmittel - Freilandprüfung zur Bestimmung
le terrain pour déterminer l'efficacité protectrice der relativen Wirksamkeit eines Holzschutzmittels
relative d'un produit de préservation du bois sans ohne Erdkontakt - Verfahren mit horizontaler
contact avec le sol - Méthode avec un assemblage à Überblattung (Lap-Joint)
joint superposé
This European Standard was approved by CEN on 30 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 12037:2022 E
worldwide for CEN national Members.
Contents Page
European foreword . 4
Introduction . 5
1 Scope . 6
2 Normative references . 6
3 Terms, definitions and symbols . 6
3.1 Terms and definitions . 6
3.2 Symbols . 7
4 Principle . 8
5 Materials . 8
5.1 Test specimens . 8
5.2 End-seal compounds .10
6 Apparatus and equipment .10
7 Sample of wood preservative .12
8 Test lap-joints .12
8.1 Initial end sealing .12
8.2 Treating process .12
8.3 Retention of preservative .12
8.4 Post-treatment handling of the test lap-joints .13
8.4.1 Conditioning .13
8.4.2 Final end sealing (prior to exposure) .13
8.4.3 Labelling .13
8.4.4 Assembling lap-joints .13
9 Untreated control lap-joints.13
10 Exposure test site .13
10.1 Selection of test site .13
10.2 Installation of the lap-joints at the test site .13
11 Inspection .14
12 Assessment .14
13 Duration of the test .15
14 Validity of test .15
15 Test report .15
Annex A (informative) Information on an additional test with a reference preservative and
on treatment processes .17
A.1 Additional test with a reference preservative .17
A.1.1 General .17
A.1.2 Reference preservative .17
A.1.3 Additional reference preservative 1 .17
A.1.4 Additional reference preservative 2 .17
A.1.5 Tolerances of variation .18
A.1.6 Reference lap-joint . 18
A.2 Model treatments methods . 19
A.2.1 General . 19
A.2.2 Brushing . 19
A.2.3 Spraying in a spray tunnel . 19
A.2.4 Dip process . 19
A.2.5 Steeping . 19
A.2.6 Double vacuum process . 20
A.2.7 Full-cell process . 20
Annex B (informative) Example of a test report . 21
Annex C (informative) Determination of the preventive efficacy of a test preservative or
components of a test preservative against staining fungi using horizontal lap-joint
method . 27
C.1 General . 27
C.2 Assessment . 27
Annex D (informative) Test field site . 28
Bibliography . 29
European foreword
This document (EN 12037:2022) has been prepared by Technical Committee CEN/TC 38 “Durability of
wood and wood-based products”, the secretariat of which is held by AFNOR.
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 2023, and conflicting national standards shall be
withdrawn at the latest by May 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 CEN/TS 12037:2003.
Test results obtained with earlier versions of CEN/TS 12037 are still valid.
In relation to CEN/TS 12037:2003, the following main modifications have been made:
— change of variation in density of test specimens;
— change of grading system for evaluation.
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
The main objective of the method is to evaluate the relative effectiveness of the preservative, applied to
jointed specimens of Scots pine sapwood by a treatment method relevant to its intended practical use
and as such does not necessarily accelerate decay but reflects probable performance in service.
The method is concerned with the protection against decay after exposure to a wide range of
microorganisms occurring out of ground contact under natural conditions. It takes into account also
physico-chemical effects of weathering on the performance of the preservative treated wood.
Since the lap-joints are exposed to natural outdoor conditions during the test period, variations in test
conditions from one exposure site to another should be expected. Differences in climate, especially
rainfall, will inevitably influence the general rate of development of decay fungi. However, by comparing
the results obtained for the test preservative with those obtained for untreated control lap-joints, the
relative protective effectiveness of the preservative under tes
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