1 Scope
This Technical Specification describes a method of test for wood preservatives that
are intended for use in wood to be exposed to the weather out of contact with the
ground without the additional protection of a surface coating.
The method is applicable to the testing of commercial or experimental preservatives
applied by techniques appropriate to commercial practice. The method is applicable
to chemical products used individually or in combination to prevent the development
of decay and/or – optional – the development of disfiguring organisms in wood and,
where suitable, in wood-based products.
NOTE 1 The method may also be used to test other treated wood species and naturally durable
timbers. It may be adapted for testing the field performance of other wood based systems
and treatments designed to enhance durability, for example treated or untreated wood
based composites, timber treated with non-biocidal systems, chemically modified or
heat treated timber.
NOTE 2 Although the test is used to assess decay, it is possible to use the method to additionally
assess stain or each separately when relevant.