This study was performed to determine the effect of fixation time and temperature on the release rate of copper, chromium, and arsenic from treated vvood, fungal resistance, and some mechanicai properties of treated wood. At 20°C and higher moisture contents, ieaching rate of preservative components decreased. In specimens treated vvith CCB and conditioned at 20°C/32-100% relative humidity, percentage of elements leached vvas less than that in specimens treated with CCA and also fixation rate increased significantiy in CCB-treated specimens. In CCA treatments, vveight iosses by G loeophyllum trabeum and Postia placetıta were more than 5 % in the fixation processes such as oven-drying at 120°C, and steaming at 80°C for 60 and 90 minutes vvhile weight İosses were less than 5% in the other fixation conditions. At re-drying temperatures of 20 and 70°C, CCA had no significant negative effect on the bending strength, MOE, and impact bending strength of the specîmens.