Metal transition Aluminium strips join two types of flooring together to provide a smooth transition between the two materials. Transition Aluminium strips are available in different material types, with metal transitions being the most common when joining vinyl-flooring materials. Metal Aluminium transitions usually mount to the substrate with screws, but it is also acceptable to glue them into place. It is common when using two types of flooring material to join them in doorways. By placing the transition or floor joint in a doorway, the door covers the transition when it is closed. Most metal transitional Aluminium strips require cutting them to length during typical installation.