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.