CEN/TS 12404:2015

SLOVENSKI STANDARD
01-maj-2015
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SIST-TS ENV 12404:2004
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Durability of wood and wood-based products - Assessment of the effectiveness of a
masonry fungicide to prevent growth into wood of Dry Rot Serpula lacrymans
(Schumacher ex Fries) S.F. Gray - Laboratory method
Dauerhaftigkeit von Holz und Holzprodukten - Bestimmung der Wirksamkeit eines
Schutzmittels gegen das Überwachsen von Echtem Hausschwamm Serpula lacrymans
(Schumacher ex Fries) S.F. Gray vom Mauerwerk auf das Holz - Laboratoriumsverfahren
Durabilité du bois et des matériaux dérivés du bois - Évaluation de l'efficacité d'un
fongicide de maçonnerie pour empêcher le développement dans le bois de la mérule
Serpula lacrymans (Schumacher ex Fries) S.F. Gray - Méthode de laboratoire
Ta slovenski standard je istoveten z: CEN/TS 12404:2015
ICS:
71.100.50 .HPLNDOLMH]D]DãþLWROHVD Wood-protecting chemicals
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

TECHNICAL SPECIFICATION
CEN/TS 12404
SPÉCIFICATION TECHNIQUE
TECHNISCHE SPEZIFIKATION
February 2015
ICS 71.100.50 Supersedes ENV 12404:1997
English Version
Durability of wood and wood-based products - Assessment of
the effectiveness of a masonry fungicide to prevent growth into
wood of Dry Rot Serpula lacrymans (Schumacher ex Fries) S.F.
Gray - Laboratory method
Durabilité du bois et des matériaux dérivés du bois - Dauerhaftigkeit von Holz und Holzprodukten - Bestimmung
Évaluation de l'efficacité d'un fongicide de maçonnerie pour der Wirksamkeit eines Schutzmittels gegen das
empêcher le développement dans le bois de la mérule Überwachsen von Echtem Hausschwamm Serpula
Serpula lacrymans (Schumacher ex Fries) S.F. Gray - lacrymans (Schumacher ex Fries) S.F. Gray vom
Méthode de laboratoire Mauerwerk auf das Holz - Laboratoriumsverfahren
This Technical Specification (CEN/TS) was approved by CEN on 6 October 2014 for provisional application.

The period of validity of this CEN/TS is limited initially to three years. After two years the members of CEN will be requested to submit their
comments, particularly on the question whether the CEN/TS can be converted into a European Standard.

CEN members are required to announce the existence of this CEN/TS in the same way as for an EN and to make the CEN/TS available
promptly at national level in an appropriate form. It is permissible to keep conflicting national standards in force (in parallel to the CEN/TS)
until the final decision about the possible conversion of the CEN/TS into an EN is reached.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,
Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, 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: Avenue Marnix 17, B-1000 Brussels
© 2015 CEN All rights of exploitation in any form and by any means reserved Ref. No. CEN/TS 12404:2015 E
worldwide for CEN national Members.

Contents Page
Foreword .3
Introduction .4
1 Scope .5
2 Normative references .5
3 Terms and definitions .5
4 Principle .5
5 Test materials .6
5.1 Test fungus .6
5.1.1 Obligatory test fungus .6
5.1.2 Optional test fungi .6
5.1.3 Maintenance of strains .6
5.2 Products and reagents .6
5.2.1 Water, distilled or deionized, conform to grade 3 of EN ISO 3696. .6
5.2.2 Malt – mineral salt – agar culture medium; consisting:.6
5.3 Apparatus .7
5.3.1 Culture vessels .7
6 Sample of the preservative .8
7 Mortar test specimen .9
7.1 Preparation of mortar .9
7.2 Preparation of mortar test specimen .9
7.3 Curing of mortar test specimen . 11
7.4 Leaching of mortar test specimen . 11
7.5 Number and distribution of mortar test specimens . 11
8 Wood test specimens . 12
8.1 Species of wood. 12
8.2 Quality of wood . 12
8.3 Provision of wood test specimens. 12
8.4 Dimensions of wood test specimens. 12
9 Procedure . 12
9.1 Culturing the test fungus . 12
9.2 Treatment of mortar test specimens. 12
9.3 Preparation of wood test specimens . 12
9.4 Sterilization procedures . 13
9.5 Exposure to fungus . 13
9.6 Examination of the mortar test specimens . 13
9.7 Validity of test . 14
10 Statement of the results . 15
11 Test report . 15
Annex A (informative) Test fungi . 16
Annex B (informative) Methods of sterilization . 18
Annex C (informative) Example of a test report . 20

Foreword
This document (CEN/TS 12404:2015) has been prepared by Technical Committee CEN/TC 38 “Durability of
wood and wood-based products”, the secretariat of which is held by AFNOR.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent rights.
This document supersedes ENV 12404:1997.
According to the CEN-CENELEC Internal Regulations, the national standards organizations of the following
countries are bound to announce this Technical Specification: Austria, Belgium, Bulgaria, Croatia, Cyprus,
Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany,
Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland,
Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom.
Introduction
This Technical Specification describes a laboratory method of test for the assessment of the effectiveness of a
masonry fungicide applied to masonry for the prevention of the growth of dry rot, Serpula lacrymans
(Schumacher ex Fries) S.F. Gray into wood.
This laboratory method enables the determination of the concentration of a preservative within mortar which
could prevent the dry rot fungus from growing through a given mortar layer treated with this preservative.
1 Scope
This Technical Specification specifies a method for determining the performance of a preservative, applied to
the upper surface of the mortar test specimens, in preventing the growth of dry rot through the treated mortar
when exposed to the test fungus.
This method is only applicable to masonry fungicides applied as a true solution of the preservative in water or
dilute oil in water emulsion. It is not applicable to rods, pastes and other similar preservative types. This
method is applicable to preservatives applied to masonry by brushing, spraying and/or injection techniques or
mixed into rendering and plastering mortar for masonry.
2 Normative references
The following documents, in whole or in part, are normatively referenced in this document and are
indispensable for its application. For dated references, only the edition cited applies. For undated references,
the latest edition of the referenced document (including any amendments) applies.
EN 113:1996, Wood preservatives - Test method for determining the protective effectiveness against wood
destroying basidiomycetes - Determination of the toxic values
EN 413-1, Masonry cement - Part 1: Composition, specifications and conformity criteria
EN 459-1, Building lime - Part 1: Definitions, specifications and conformity criteria
EN 599-1, Durability of wood and wood-based products - Efficacy of preventive wood preservatives as
determined by biological tests - Part 1: Specification according to use class
EN ISO 3696, Water for analytical laboratory use - Specification and test methods (ISO 3696)
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1
masonry fungicide
fungicidal/fungistatic product applied to masonry and other mineral construction materials to prevent the
growth of dry rot through or over the treated material
3.2
performance
behaviour of the preservative product in terms of its effectiveness in test
3.3
preservative
formulated masonry fungicide in the form received from the supplier for the test
3.4
supplier
sponsor of the test
4 Principle
The preservative to be tested is applied by pipette (or in accordance with the sponsor's instruction) to the
upper surface of mortar test specimens. The mortar test specimens are contained in rigid tubes and an
untreated wooden sample is placed on top of these mortar test specimens. The bases of the mortar
specimens are exposed to dry rot attack for a given time. The assessment of the performance of the test
preservative consists of checking the growth of the fungus through the mortar and the evaluation of any attack
of the wooden sample contained in the rigid tube.
5 Test materials
5.1 Test fungus
5.1.1 Obligatory test fungus
— Serpula lacrymans (Schumacher ex Fries) S.F. Gray, strain BAM Ebw.315.
5.1.2 Optional test fungi
For specific regional uses or conditions, it is also possible to use other strains of dry rot (e.g.Serpula
lacrymans FPRL 12 C) known to be capable of growing t
...