CEN/TS 15912:2012

Durability of reaction to fire performance - Classes of fire-retardant treated wood-based product in interior and exterior end use applications

This European Technical Specification describes the characteristics which fire-retardant treated wood products should exhibit so that their fire-retardant properties persist undiminished throughout the desired service life in the anticipated conditions of use.
The Technical Specification prescribes the classification requirements for the durability of the reaction to fire performance of fire-retardant treated wood-based products to be used in interior and exterior end use conditions. The products initially need to meet required reaction to fire classification. For interior and exterior use, limited hygroscopicity needs to be verified. In addition, products for exterior use needs to meet the minimum durability of reaction to fire performance requirements specific to the end use.
The requirements are applicable for fire-retardant treated (applied by penetrating and superficial processes or with film forming or intumescent fire-retardant coatings) solid wood and wood-based products and wood-based products in which the fire-retardant is incorporated during manufacture. The fire-retardant treated products may be coated with an ordinary paint.  
Mechanical properties and biological durability of fire-retardant treated wood products are not covered by this European Technical Specification.
Paints, coatings and varnishes intended to improve the reaction to fire performance of a construction product when incorporated in the works, i.e. a building, are covered by ETAG 028 [19].
This Technical Specification may be used as a basis for an approval system.

Dauerhaftigkeit des Verhaltens bei Brandeinwirkung - Klassen der mit Feuerschutzmitteln behandelten Holzprodukte für Anwendungen im Innen- und Außenbereich

Die vorliegende Europäische Norm beschreibt die Eigenschaften, die mit Feuerschutzmitteln behandelte
Holzprodukte aufweisen sollten, um sicherzustellen, dass deren Feuerschutz-Eigenschaften über die gewünschte
Gebrauchsdauer in den angenommen Bedingungen, unvermindert vorhalten.
Die Norm schreibt die Klassifizierungsanforderungen an die Dauerhaftigkeit des Verhaltens bei
Brandeinwirkung von mit Feuerschutzmitteln behandelten Holzprodukten vor, die in der Endanwendung in
Innen- und Außenbereichen gelten. Die Produkte müssen zunächst die erforderliche Klassifizierung
Brandverhaltens erreichen. Für Innen- und Außenanwendungen ist die begrenzte Hygroskopizität
nachzuweisen. Darüber hinaus müssen Produkte für Außenanwendungen die für die Endanwendung
spezifischen Mindestanforderungen an die Dauerhaftigkeit des Verhaltens bei Brandeinwirkung erfüllen.
Die Anforderungen gelten für mit Feuerschutzmitteln behandeltes (auf-/eingebracht durch eindringende oder
oberflächlichen Verfahren oder Film bildende oder Intumeszenz-Beschichtungen) Vollholz sowie für Holzprodukte.
Die Produkte dürfen mit einem üblichen Anstrich beschichtet sein.
Mechanische Eigenschaften und die biologische Dauerhaftigkeit von mit Feuerschutzmitteln behandelten
Holzprodukten sind kein Bestandteil der vorliegenden Europäischen Norm.
Farben, Lacke und Beschichtungen, die dazu dienen das Verhalten bei Brandeinwirkung eines eingebauten
Bauprodukts zu verbessern, sind durch ETAG 028 [19], abgedeckt.
Diese Norm kann als eine Grundlage für ein Anerkennungssystem dienen.

Durabilité des performances de réaction au feu - Classement des produits à base de bois ignifugés pour utilisation finale en intérieur et en extérieur

1   Domaine d'application
La présente spécification technique décrit les caractéristiques que les produits bois ignifugés doivent présenter pour que les propriétés ignifuges soient pérennes pendant toute la durée de service souhaité dans les conditions d'utilisation prévues.
Cette spécification technique prescrit les exigences de classification pour la durabilité des performances de réaction au feu des produits à base de bois ignifugés, destinés à être employés dans des conditions d'utilisation finale en intérieur et en extérieur. Les produits peuvent d'abord satisfaire au classement exigé de réaction au feu. L'hydroscopicité réduite des produits utilisés en intérieur et en extérieur peut être vérifiée. En outre, les produits destinés à être utilisés en extérieur peuvent satisfaire aux exigences minimales de durabilité de la performance de réaction au feu spécifiques à l'utilisation finale.
Les exigences sont applicables aux produits en bois et à base de bois ayant fait l'objet d'un traitement ignifugeant (appliqué par un processus d’imprégnation à cœur et en surface ou au moyen d'un revêtement filmogène ou d'un revêtement intumescents ignifuge) et aux produits en en bois et à base de bois ayant un traitement ignifugeant durant leur fabrication. Il est admis que les produits ignifugés soient revêtus d'une peinture non ignifuge.
Les propriétés mécaniques et la durabilité biologique des produits en bois ignifugés ne sont pas couvertes par la présente spécification technique.
Lorsqu'ils sont incorporés à l'ouvrage déjà en œuvre, comme des bâtiments déjà installés, les peintures, les revêtements et les vernis destinés à améliorer la performance de réaction au feu des produits de construction sont couverts par l'ETAG 028 [19].
La présente spécification technique peut être utilisée comme base d'un système d’agrément.

Trajnost odziva na ogenj - Razredi zaščitenih lesnih proizvodov, obdelanih z zaščitnimi sredstvi proti ognju za uporabo v notranjih prostorih in na prostem

Ta standard EN predpisuje zahteve za razvrstitev na področju trajnosti odziva na ogenj za lesne proizvode, obdelane z zaščitnimi sredstvi proti ognju, ki so namenjeni za uporabo pod pogoji končne uporabe, tj. v notranjih prostorih in na prostem.

General Information

• Status: Withdrawn
• Publication Date: 17-Apr-2012
• Withdrawal Date: 10-Oct-2017
• ICS: 71.100.50 - Wood-protecting chemicals
• Technical Committee: CEN/TC 175 - Round and sawn timber
• Drafting Committee: CEN/TC 175/WG 39 - Specific user requirements - Fire retardant treated wood
• Current Stage: 9960 - Withdrawal effective - Withdrawal
• Completion Date: 11-Oct-2017
• Ref Project: SIST CEN/TS 15912:2012 - Durability of reaction to fire performances - Classes of fire retardant treated wood-based product in interior and exterior end use applications

Relations

• Replaced By: EN 16755:2017 - Durability of reaction to fire performance - Classes of fire-retardant treated wood products in interior and exterior end use applications
• Effective Date: 10-Jan-2018

Standards Content (Sample)

SLOVENSKI STANDARD
01-september-2012
7UDMQRVWRG]LYDQDRJHQM5D]UHGL]DãþLWHQLKOHVQLKSURL]YRGRYREGHODQLK]
]DãþLWQLPLVUHGVWYLSURWLRJQMX]DXSRUDERYQRWUDQMLKSURVWRULKLQQDSURVWHP
Durability of reaction to fire performances - Classes of fire retardant treated wood-based
product in interior and exterior end use applications
Dauerhaftigkeit des Verhaltens bei Brandeinwirkung - Klassen von mit
Feuerschutzmitteln behandelten Holzprodukten für Anwendungen im Innen- und
Außenbereich
Durabilité des performances de réaction au feu - Classes de produits à base de bois
ignifugés pour utilisation finale en intérieur et en extérieur
Ta slovenski standard je istoveten z: CEN/TS 15912:2012
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 15912
SPÉCIFICATION TECHNIQUE
TECHNISCHE SPEZIFIKATION
April 2012
ICS 71.100.50
English Version
Durability of reaction to fire performance - Classes of fire-
retardant treated wood-based product in interior and exterior end
use applications
Durabilité des performances de réaction au feu - Dauerhaftigkeit des Verhaltens bei Brandeinwirkung -
Classement des produits à base de bois ignifugés pour Klassen der mit Feuerschutzmitteln behandelten
utilisation finale en intérieur et en extérieur Holzprodukte für Anwendungen im Innen- und
Außenbereich
This Technical Specification (CEN/TS) was approved by CEN on 14 February 2012 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, 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

Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2012 CEN All rights of exploitation in any form and by any means reserved Ref. No. CEN/TS 15912:2012: E
worldwide for CEN national Members.

Contents Page
Foreword .4
Introduction .5
1 Scope .6
2 Normative references .6
3 Terms and definitions .6
4 Symbols .7
5 Requirements .7
5.1 Wood-based products and non-fire-retardant coating systems .7
5.2 Reaction to fire performance .8
5.2.1 Initial classification for reaction to fire .8
5.2.2 Reaction to fire performance before and after accelerated or natural weathering .8
5.3 Durability of reaction to fire performance .9
5.3.1 General .9
5.3.2 DRF Class ST .9
5.3.3 DRF Class INT1 .9
5.3.4 DRF Class INT2 .9
5.3.5 DRF Class EXT .9
6 Practices to use the DRF classification system . 11
7 Classification report . 11
Annex A (informative) Test methods . 13
A.1 Hygroscopic properties of fire-retardant treated wood-based products including those
with fire-retardant coatings . 13
A.1.1 General . 13
A.1.2 Field of application . 13
A.1.3 Sampling, sample handling and preparation . 14
A.1.4 Test method . 15
A.2 Accelerated weathering of fire-retardant treated wood for fire testing . 17
A.2.1 General . 17
A.2.2 Field of application . 18
A.2.3 Sampling, sample handling and preparation . 18
A.2.4 Test method . 19
A.3 Building materials and components in the vertical position: Exposure to accelerated
climate strains . 21
A.3.1 General . 21
A.3.2 Field of application . 21
A.3.3 Sampling . 21
A.3.4 Test method . 22
Annex B (informative) Example of classification report . 26
B.1 Classification report: Durability classes of reaction to fire performance of fire-retardant
wood-based products in interior and exterior end use applications according to CEN/TS
15912 . 26
B.1.1 Product . 26
B.1.2 Product specification . 26
B.1.3 Requirements . 27
B.1.4 Evaluation documents . 27
B.1.5 Durability of reaction to fire performance (DRF) Class . 28
B.1.6 Applicability of DRF Class . 28
B.1.7 Service life . 29
Bibliography . 30

Foreword
This document (CEN/TS 15912:2012) has been prepared by Technical Committee CEN/TC 175 “Round and
sawn timber”, 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.
According to the CEN/CENELEC Internal Regulations, the national standards organisations of the following
countries are bound to announce 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, Romania, Slovakia, Slovenia, Spain,
Sweden, Switzerland, Turkey and the United Kingdom.

Introduction
Fire-retardant treatments may considerably improve the reaction to fire properties of wood and wood-based
products and these may result in wood having the highest fire-resisting characteristics achievable with any
combustible product. However, the reaction to fire performance may be reduced by exposure to wet and/or
humid conditions [1] and the ability of treatments to continue to perform even when exposed to these
conditions needs to be demonstrated.
Two aspects of fire durability of the fire-retardant treatment of wood-based products need to be considered.
One is the risk for high moisture content and migration of the fire-retardant chemicals within the wood product
and salt crystallisation on the product surface. These hygroscopic properties of the treated wood-based
product can be evaluated by exposure to high relative humidity.
The other aspect is the risk for decreased fire performance due to loss of the fire-retardant chemicals by
leaching in exterior applications, e.g. facade claddings. Maintained fire performance after weathering needs to
be verified.
The Technical Specification is based on a Nordtest standard [15] and on experience from North America [7]
[12].
1 Scope
This European Technical Specification describes the characteristics which fire-retardant treated wood
products should exhibit so that their fire-retardant properties persist undiminished throughout the desired
service life in the anticipated conditions of use.
The Technical Specification prescribes the classification requirements for the durability of the reaction to fire
performance of fire-retardant treated wood-based products to be used in interior and exterior end use
conditions. The products initially need to meet required reaction to fire classification. For interior and exterior
use, limited hygroscopicity needs to be verified. In addition, products for exterior use needs to meet the
minimum durability of reaction to fire performance requirements specific to the end use.
The requirements are applicable for fire-retardant treated (applied by penetrating and superficial processes or
with film forming or intumescent fire-retardant coatings) solid wood and wood-based products and wood-
based products in which the fire-retardant is incorporated during manufacture. The fire-retardant treated
products may be coated with an ordinary paint.
Mechanical properties and biological durability of fire-retardant treated wood products are not covered by this
European Technical Specification.
Paints, coatings and varnishes intended to improve the reaction to fire performance of a construction product
when incorporated in the works, i.e. a building, are covered by ETAG 028 [19].
This Technical Specification may be used as a basis for an approval system.
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 927-3, Paints and varnishes  Coating materials and coating systems for exterior wood  Part 3: Natural
...