Different types of cover layer on the blockboard produces different strengths. This study was conducted to determine the power difference. Type of cover that is used in this study is 3 mm plywood, 2.5 mm plywood and plywood layers of mica. The results showed that the water content of the blockboard between 11.71% - 12.15%, while the density between 0.33 to 0.40 gr/cm3. In the direction parallel…