Aug 15, 2022 · Step 1: First use a smaller diameter drill,lead a hole on the Part where the SS Screws into the wall board, then screw the first row of the wall board into the keel. Step 2: push the cut WPC wall board to the appropriate position, then screw the wall board, and so on, install in turn. It is rOkaymmended that the length of each wpc wallboard