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.