Measure the transition space between the laminate flooring and the other type of flooring with a measuring tape. You will need ¼-inch expansion space on each side of the bottom area on the T-molding.
Measure the doorway where the T-molding transition will be located. Transfer these measurements to the T-molding with a pencil or marker.
Place the molding on a miter saw and position it so the measurement mark lines up with the saw blade. Cut the molding.
Vacuum the space between the floorings. This should remove any dirt, dust or debris that will make it difficult to properly install the molding.
Apply polyurethane glue on the bottom of the T-molding. Set the molding in place in the transition. Press down so the glue touches the subfloor. Allow the glue to dry for 24 hours prior to walking on the T-molding.