Assessment before blowing or dense-packing joist bays
If bulk water is migrating through block or stone walls, fiberglass batts dangling from bays only hide rot — we advise fixing bulk moisture drivers first, then layer insulation thoughtfully along subfloor ducts or plumbing corridors.
Pairing with attic work
Unbalanced tightening can shift stack paths; pairing crawl upgrades with attic air sealing audits often resolves stubborn first-floor drafts more predictably.