Fig. 2From: Effect of oil impregnation on water repellency, dimensional stability and mold susceptibility of thermally modified European aspen and downy birch woodVolumetric swelling and leaching loss from the thermally modified (TM) and non-TM samples from aspen (A) and birch (B) impregnated with tung oil (T), pine tar (Ta) and Beckers (Bk) in the wet–dry cycle test. Each point is the mean value of five repeated tests. Unimpregnated samples from non-TM material of aspen and birch are regarded as control (C)Back to article page