Q: How do I silence a squeaky wood floor?
A: Squeaky floors are caused by wood rubbing against wood or wood rubbing against nails in a floor that has loosened. If you can get to your floor from a basement or crawlspace, most homeowners should be able to repair a squeak easily with the following quick fix.
While you are standing under the area that is causing the problem, have someone walk across the floor so you can locate the exact location of the squeak. Coat a shim with wood glue and tap it lightly into the space between joist and floor, making sure that you don't raise the floor further by pushing it in too far. 