The adhesion strength of four different types of species was determined in this study. Bleached, stained, and preservative treated samples of spruce (Picea orientalis), yellow pine (Pinus sylvestris), beech (Fagus orientalis), and chestnut (Castanae sativa) were used to evaluate their adhesion strength properties. Surface roughness of coated samples were also measured using a stylus method. Bleaching had the most adverse influence on surface quality of the samples followed by preservatively treated specimens. In terms of adhesion strength resistance stained samples resulted in an average adhesion strength of 1585 N/mm(2) which was the highest among the other samples. It appears that coating with three chemicals enhanced adhesion strength of treated samples from four species as compared to those of the control samples. (c) 20.07 Elsevier B.V. All rights reserved.