In the case of oak flooring, you will have to decide whether to buy unfinished or prefinished oak flooring.
Prefinished oak flooring is a type of flooring which takes much less time to be installed. The boards in this case have been finished before laying the floor. Therefore, you can determine what color and tone the floor will have once fitted. Such boards are usually finished with the use of hard wax oils or lacquers.
Unfinished oak flooring is a type of flooring made of boards that require finishing after installation. In the case of unfinished floors any type of finish can be applied to achieve the desired effect.