| Summary: | In this study, the effect of the accelerated weathering process on some surface properties of heat-treated sweet bay wood (Laurus nobilis L.) was investigated. Wood samples were heat-treated at 160 ℃, 180 ℃, 200 ℃and 210 ℃ for 2 hours. After heat treatment, weight loss, color, glossiness, and surface roughness values of the samples were determined. Accelerated weathering was applied for 8 hours UV, 15 minutes water spray and 3 hours and 45 minutes conditioning. The changes in surface properties were determined by measurements taken before weathering (0 hours) and after weathering (100, 250 and 500 hours). The results obtained showed that there was a significant increase in weight loss by increasing the heat treatment temperature to 210 ℃. With the effect of heat treatment, there was a decrease in the glossiness and roughness values, and the total color change and surface roughness increased with the increased heat treatment temperature. As the weathering time increased, the graying on the surfaces increased, and a 25% increase was observed in the 60° glossiness value.
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