Environmental concerns require a new approach in the field of wood protection. Band of many traditional wood preservatives has lead to intense researches for new environmental-friendly wood preservatives. Amines seem to be promising substitutes for classical biocides. Fungicidal and leaching resistance as well as some other chemical analysis of beach and Norway spruce samples treated with ethanolamine, triethanolamine or ammonia was examined. Initially, percentage of fixed nitrogen in samples was established. Afterwards fungicidal resistance against Trametes versicolor and Gloeophyllum trabeum were determined according to the standard laboratory test EN 113. Finally, leaching resistance was performed according to the modified standard EN 1250 procedure. We found out that the mayor part of amines remained in wood and did not evaporate from it. The results indicated that amine treated wood increased resistance against wood decay fungi. On the other hand amine treated wood was not found suitable for use in hazard class 4, since amines were leached out of the wood.

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