The creaky floor is not a particular problem, but irritation causes. The main thing is to determine exactly where the breakdown happened, and which of the boards should be repaired. There are places where the parquet begins to rise near the beam. You can put woods made of wood or attach tiles there. If there are no gaps near the beam, but the creak takes you, then there may have been a gap between the floorboards and the floor itself. It is necessary to use screws with the help of screws. A screwdriver is suitable for such a thing.