After the bonded veneers had been treated with conditioning method B, where they were immersed in water for 3 h and re-dried for one week, several veneers had delaminated, i.e. the water resistance was poor. However, the wood substrates bonded with Cascol and locust bean gum dispersed in water did not delaminate, showing good water resistance. The tensile shear strengths decreased for both the veneers bonded with Cascol and locust bean gum dispersion but the tensile shear strength was higher for Cascol.