Sagging floor from wall resting mid-span on trusses — is plywood sistering enough?
Noticed a slight hump at an interior door. Checked the crawl space and found an interior wall sitting mid-span between two open web floor trusses, resting directly on the subfloor with no support underneath it.
There’s a steel I-beam nearby reacting onto a steel post. I put a 4x 4 next to the beam and used a temporary jack post to lift it myself helped some but didn’t fully correct the sag.
A foundation repair company recommended sistering 3/4” plywood to both sides of the trusses to add strength. Curious what others think:
Does plywood sistering on the trusses actually fix a mid-span bearing wall issue like this, or is that treating the wrong problem?
Anyone had a similar setup what ended up working
u/Unlucky-Ferret6785 — 3 days ago