If your hardwood floor is squeaking: If the area below the floor is unfinished (like in a basement), you can fix the squeak by working on it from underneath the flooring. Go down into your basement and find the squeak on the floor above you. Insert a shim (a wedge of wood) where the subfloor is rubbing against the joist, and fill in the area with a strong glue (such as liquid nails) to keep the piece in place.
If your hardwood floor is squeaking: If the area below the floor is unfinished (like in a basement), you can fix the squeak by working on it from underneath the flooring. Go down into your basement and find the squeak on the floor above you. Insert a shim (a wedge of wood) where the subfloor is rubbing against the joist, and fill in the area with a strong glue (such as liquid nails) to keep the piece in place.
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