本文件规定了主要用于装饰和保护刨木和锯木的外部木材涂层系统的自然风化试验。 该测试提供了一种在户外暴露期间评估木材涂层系统性能的方法。根据EN927-2。它也有助于比较不同基材上的涂层系统性能，包括木材种类或其他木材改性。 更多信息，请参见附件E

This document specifies a natural weathering test for exterior wood coating systems mainly intended for decoration and protection of planed and sawn wood. The test provides a means of evaluating the performance of a wood coating system during outdoor exposure. It forms the basis for the performance specification according to EN？927-2. It also facilitates the comparison of coating systems performance on different substrates including the wood species, or other wood modifications. For further information, see Annex？E.