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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
...