Noisy floor

Q: I have bought an old house. The hardwood floor makes so much noise, and it’s increasing day by day. Earlier it was not that much, but now it’s bad.

Any solution?

A: If you have access to the sub floor from the basement ceiling, perhaps you could screw support pieces across sections of the sub floor to lessen its movement. But don’t use such a long screw as to go right through the floor.