The European Institute for Wood Preservation (WEI-IEO) is an industry organisation that serves as a hub for the European wood preservation industry. Here are the main activities of the organisation and why they are important:

Main activities are:


Industry cooperation

We serves as a focal point for consultation within and between the European wood preservation industries. This cooperation helps businesses share best practices, exchange information, and identify common challenges. By working together, the industry can address issues that affect all businesses, and help promote the sustainable and responsible use of wood as a building material.


Meetings and congresses

We organises technical meetings and congresses that bring together members of the wood preservation industry to share knowledge, exchange ideas, and collaborate on projects. These events help promote innovation, advance the state of the art in wood preservation, and build stronger relationships among industry participants. They also help build awareness and understanding of the industry among policymakers, researchers, and the public.


Member advice

We provides technical, commercial, and legal advice to its members. This advice is critical for businesses operating in the highly regulated and constantly evolving industry of wood preservation. Members can tap into the extensive expertise and knowledge to help them navigate complex legal requirements and to make informed decisions about their operations.


News and documents

WEI-IEO produces a bimonthly newsletter and from time to time technical documents that keep members up-to-date on the latest developments in the industry. This information helps businesses stay informed, make informed decisions, and stay ahead of the competition. It also promotes transparency and accountability, which are critical for building trust and confidence in the industry.


Monitor and advocacy

The organization closely monitors and contributes to European and national legislation and the policy making process that affects the production and use of pressure-treated timber. This work helps ensure that regulations are fair, transparent, and effective, and that they do not unduly burden the industry. By advocating for sensible legislation, WEI-IEO helps create a level playing field for businesses, and promotes the responsible and sustainable use of wood as a building material.



WEI-IEO engages in the development of quality standards for wood preservatives and treated timber, and is heavily involved in the work of CEN, the European Committee for Standardisation. By setting high standards for the industry, WEI-IEO helps ensure that consumers can trust the quality and safety of wood products, and that businesses can compete on a level playing field. This work also helps advance the state of the art in wood preservation, leading to new innovations and efficiencies.


R&D Projects

WEI-IEO is involved in European Research and Development projects that help advance the science and technology of wood preservation. This work helps identify new and better ways to treat and preserve wood, leading to more durable, sustainable, and cost-effective wood products. This is critical for the industry’s long-term viability, as it must compete with other building materials.

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