When used properly, wood is a very durable material. In order to guarantee the long service life of wooden constructions, the construction planning must include a wood preservation concept, consisting of design and construction measures. Where applicable, preventative chemical wood preservation, construction process organisation, as well as the right selection of material should be considered.
- In general, wood preservation during construction should be given priority.
- Chemical wood preservation measures should be avoided for interior applications.
The European standards EN 335 regulate wood preservation. National standards must also be taken into consideration (e.g., DIN 68800-1). Given that, chemical wood preservation can only prevent the risk of fungal and insect infestation, but not shape modifications and their consequences. Even the most thorough chemical wood preservation may not lead to negligent design and construction.
Where possible, and economically and environmentally reasonable, chemical wood preservation may be avoided by using resistant wood species.