CEN/TC 175/WG 39 - Specific user requirements - Fire retardant treated wood

CCMC - addition of superseding note in the European Foreword

This European Standard describes the characteristics for fire-retardant treated wood products.
NOTE 1   It is based on maintaining performance undiminished throughout the desired service life in the anticipated conditions of use.
The European Standard prescribes the classification requirements for the durability of the reaction to fire performance of fire-retardant treated wood products to be used in interior and exterior end use conditions.
This European Standard applies to wood which has been treated during a production process with fire retardant products applied either by a penetration process or by a superficial process, such as with a film forming or intumescent fire retardant coating. It covers fire-retardant treated products that are coated with an ordinary paint.
Mechanical properties and biological durability of fire-retardant treated wood products are not covered by this European Standard.
NOTE 2   This standard can be used for other manufactured wood products.
This standard covers wood products. It doesn’t cover wood-based panels.
NOTE 3   Wood based panels for construction are described in EN 13986.

This document describes test methods and methods for classification of wood and wood-based products for which a stage in the production process results in an improvement of the reaction-to-fire classification in accordance with EN 13501-1 for use in interior and exterior situations (use classes 1, 2, and 3 as defined in EN 335:2013).
NOTE The classes of this document are not performance classes and do not give guidance for how long the reaction to fire classification of wood or wood-based product will last.
This document applies to
-   wood and wood-based products (specific wood species, wood treated with preservatives and modified wood, for example thermally and chemically modified wood) that have been treated with fire-retardant chemical(s) applied either by a penetrating process or by a superficial process, such as with a film forming fire-retardant coating.
-   wood-based products that incorporate fire retardant chemical(s) as part of the production process.
This document also covers fire-retardant wood and wood-based products that have a non-fire-retardant coating.
Mechanical properties, aesthetic properties, dimensional stability properties, service life and biological durability of fire-retardant wood and wood-based products are not covered by this document.
NOTE 2 This document is relevant for, but not limited to, products covered by these products standards: EN 13986, EN 14081-1, EN14374, EN 14915 and EN 16351.
NOTE 3 EAD 350865-00-1106  covers fire retardant products (coating) applied in situ.

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.