Thanks for the feedback. After what I’ve read I won’t be trying to jack the sag back up to full height. I’ll just shore it up so it won’t get worse.
Any thoughts about removing the unconnected bridging to get the insulation upgraded easier and then using strapping instead of putting bridging...
I live in a house built in 1939. While doing plumbing repairs in the crawl space I noticed the cross bridging between my 2X12 floor joists is not, and has never been nailed to the bottom of the joists. (no nails, holes or splits in the 1X4's)
I understand that, in that era, the rough in guys...