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I would like to remove my massive chestnut parquet floor on joists, and all on a concrete slab, in a room. It is over 30 years old, a little damaged because soft wood, squeaks a lot, is noisy underneath, and more sanding traces of the glazer are very visible. I would like to take this opportunity to isolate. I realize that nailed floors are not done so much anymore; can we, because of the configuration, opt for a glued solid parquet? If so, what should you do? Remove the joists? How to catch up with the level without adding too much weight or moisture? On the contrary, if we keep the joists, I guess it will be necessary to add on the plates of "something" before sticking the floor and then the level is going to be higher than the neighboring tile corridor ?? What would be your solution, which would also cause the least risk of damage and dirt in the rest of the house?

In all respects, the most logical is to replace a parquet floor on joists with another floor... on joists.
All dealers in parquet flooring offer solid parquet nails in thickness of 22 or 23 mm, which avoids the extra thickness with the next room. Acoustically, the removal of the old floor will be an opportunity to dump between the joists loose rock wool or Vermiculite.
To avoid squeaks, several solutions are possible: insert strips of felt between the joist and the floor, put strips of glue on the joists before nailing the floor, use twisted nails.

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