This paper informs about a research project, which deals with several shortcomings and a lack of clarity within EN 350:2016. The project started in January 2020, will run for 3 years, and is operated by the Institute of Wood Technology Dresden (IHD) and the University of Goettingen (UGOE). Determination and classification of durability of wood and wood products against wood-destroying organisms is regulated by EN 350. By the revised version of 2016, its scope has been extended to processed wood, including heat-treated, preservative-treated and otherwise modified wood as well as wood-based materials. Neither the standard itself nor the indicated test methods allow a durability classification in a comprehensive manner. Aim of the project is to develop applicable methods for sampling and durability testing as well as an adequate classification system, enabling a comparative performance evaluation of different products. After identifying the product-specific, methodological development needs, selected products and materials from various groups will be investigated, using both laboratory and field test methods. Based on the results, a technical guideline will be compiled, which will include aspects of sampling, testing, durability classification, and recommendations for standardisation and product declaration.

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