ISO 21887:2007 PDF

Scope: This International Standard defines five use classes that represent different service situations to which wood and wood-based products can be exposed all over the world. Subclasses are also defined for these use classes. NOTE These subclasses might or might not be employed in national or regional standards depending on local needs. This International Standard applies only to preservatives and processes for pre-treatment of wood and wood products and is not intended for products and processes for remediation and eradication of existing damage to timber. The annex to this International Standard provides guidance on applying use classification to specify preservative treatments, treated wood, naturally durable and modified wood but does not provide definitive specifications.

ISO 21887:2007 history