[quote=sdduuuude]I would guess it is probably be worth doing. If I were a buyer, I would notice that for sure and be worried.
Taking up carpet and putting the same carpet back down isn’t really all that costly for a professional installer.
Possible to get to it from underneath? Remove the drywall on the ceiling, put in glue and shim shingles. Maybe some johnson paste wax and a grease gun.[/quote]
From beneath you would probably sister up to the problem joists with lumber with some sub-floor adhesive on top of the new wood and then go back up and put a few screws in.
I think taking up the carpet and using new full head screw is the best fix unless the oringinal sub-floor intallation was so sloppy that you can’t get both good plywood and good joist with a screw.
