Sub floor is osb tongue and groove 3 4 on upper floor with carpet main floor sub floor is osb tongue and groove 3 4 on lower floor with 3 4 hardwood.
Plywood floor squeaky in my new house.
Before i attempt to try anything i thought i would see what you suggested.
If the tops of the floor joist are not flat and level then the sheets of plywood or sub flooring will not be fully supported evenly.
See below for a shopping list and tools subscribe to this old house.
When nailed down the sub flooring will be sucked down unevenly.
Which is all carpeted.
Over time the portions of the floor that have been sucked down will try to go back to a flat and level position.
I have posted the video below of the upper level.
Since day 0 one of the major issue had been my flooring both main level and the upper level.
Floor joist tops not level.
This causes the floorboards to rub against each other or against the subfloor or against the nail casings.
This old house general contractor tom silva silences some squeaky floors.
Squeaks happen when a house settles and wood flooring dries and then expands.
With hardwood floors drive ring shank or cement coated flooring nails into the seams between boards.
For squeaky floor repair begin from underneath the floor if you can.
Annoying floor squeaks common in many homes typically occur after the house has settled and flooring lumber has dried out and shrunk.
If the underside is covered you will have to work from above.
Squeaky floors may alert you to kids sneaking in past curfew but they ve got little else going for them.