Creaks coming from wood floors happen for a number of reasons from loose nails to separation from the subfloor.
Why do my floors creak.
A few trim screws inserted through the boards can help stop the squeak or you can place shims between the subfloor and the joist if accessible.
Annoying floor squeaks common in many homes typically occur after the house has settled and flooring lumber has dried out and shrunk.
Nails rub on plywood when walking on floor and cause the squeak.
Once the adhesive hardens it ll prevent movement in the floor and stop the creaking noise.
I have some squeaks in my floor that i have narrowed down to exposed nails coming through the plywood sub floor from the basement which is not finished.
Or if separating floor from subfloor is causing the creak drive two nails at opposite 45 degree angles into joists which you can locate with a stud finder.
The majority of sub flooring issues can be corrected by adding screws in the areas where the creaking is occurring.
Floor joists can occasionally twist warp bow or shrink.
Then fill the holes with wood filler.
When you glue a hardwood floor to concrete the subfloor must be completely level.
If there are voids the boards can flex into them and make creaking sounds as they rub together.
Screws will normally do a much better job of holding the.
As you walk across the floor boards rub against each other or slide against nail shafts to produce a cacophony of squeaks and creaks.
Nail a board along a warped joist.