This paper presents the results of an initial screening of the moisture buffering performance of various wood species on two humidity levels. In addition, the effect of coatings and variation in three different grain directions regarding the moisture buffering performance were investigated. To create a link from the material behaviour to an end product, wooden interior element demos made in Aalto University student projects are also presented.
The cutting direction and thus the grain direction is the most significant factor influencing the sorption behaviour of wood from material perspective. Moisture buffering value for the crosscut surface of Scots pine was fourfold compared to the radial surface. The choice of coating is also of utmost importance when the moisture buffering ability of wood material is to be retained. Typical coatings used in interiors may decrease the moisture buffering capacity more than 50%.
Keywords: moisture buffering, coatings, anisotropy
Authors
Vahtikari K.
Department of Forest Products Technology, Aalto University, Aalto
Hughes M.
Department of Forest Products Technology, Aalto University, Aalto
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