We have a 6 year old house. The hardwood is beginning to squeak. I have used finish nails several times and covered with putty.
Would it hurt anything to go into the crawlspace and screw the subfloor to the the hardwood. It is 3/4 plywood and 3/4 hardwood. Was thinking about 1.25 drywall screws
Also there is no blocking, bracing, bridging in the floor joist. I was thinking about adding some. Any recommendations which to use. I have found some metal bridging that can be installed after the subfloor has been installed.
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