NWPC Documents

In connection with the implementation of the European standards for preservative-treated wood (EN 351) and wood preservatives (EN 599), INSTA 140 was withdrawn in 1997. With the attempt to maintain the well-established wood preservation classes, presently denoted wood protection classes, the NWPC decided to prepare a Nordic application document of EN 351, NWPC Document No 1, Part 1. Thus, the first edition of NWPC Document No 1, Part 1, came into force in 1998.

Matix of NWPC documents


NTR-Standards Documents