Preserved wood

For preservation purposes, wood is treated with chemicals (biocides). However, in order to avoid unacceptable harmful side effects for humans, health and the environment, you may only use authorised wood preservatives. The Board for the Authorisation of Plant Protection Products and Biocides (College voor de toelating van gewasbeschermingsmiddelen en biociden or Ctgb) determines which products are authorised in the Netherlands.