If you have a wood floor that is a newer type, not over 10-12 years old, you should know that those products were made with an aluminum oxide finish coat and it has to have special preparation of the surface for the additional coat of finish to properly adhere. If not done properly then it can become a major nightmare for the owner of that floor. A word to the wise, if you will, to save you the inherent problems that have plagued others who have unknowingly made this mistake.