W.E.I. European Institute for Wood Preservation
W.E.I. Europäisches Institut für Holzimprägnierung
I.E.O. Institut Européen pour la Préservation du Bois

Treated wood -a sustainable choice ↗
A construction material, provided and renewable by Nature, with predictable performance, taking carbon from the atmosphere and locking it away for decades, with low energy demand and a feel good aesthetic, appreciated by almost everyone – that’s treated wood.
Wood is the only truly renewable construction material.
In pursuit of excellence ↗
The European Institute for Wood Preservation is a prestigious body representing the wood preservation industry in Europe. This charter elaborates standards of professional conduct and expertise to which its members subscribe, and demonstrates their commitment to excellence.
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About European Institute for Wood Preservation
The IEO-WEI is the European industry trade association representing the wood preservation
industry and promotes the benefits of treated wood.
The activities of the WEI-IEO are based around wood quality and long service life of local processed wood products, preservatives, environmental and technical issues and the advocacy and marketing of finished wood products.
Latest news

WEI Spring Meeting 2023
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Treated timber is a sustainable choice
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Invitation: Breakfast Discussion
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ECHA released list of list of countries that allow Creosote for sleepers and utility poles
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SAVE THE DATE
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