My house was built in '72, I moved in in '79. Probably in the mid 80's the upstairs floor started to squeak but it sounded like it was between the subfloor and the oak flooring - more like it settled when I walked on it. Over the years it has occured in most of the upstairs rooms. It also has a few regular squeaks beneath the subflooring but those are of little concern. It just sounds as if the the oak is shifting on the subfloor. I suspect that, if the way the rest of the house is built is any indication, that the builders didn't use an adequate number of fasteners. My best guess repair is to use a couple of screws on each board to snug the two layers back together. I'd have already given this a try but I'm finding it is not easy to find white oak (I believe it is - builders grade) to make plugs for the screw head holes. I finally have to deal with the issue as I'm selling soon and need to refinish the floors.
Has anyone had this sort of problem? Any suggestions for a fix?
TIA Kiyu