Sill plates, sistering joists, band boards- these are all parts of your home’s flooring, and they could explain why your floor is sloping or sagging.
Floor Stabilizers & Joist Support, Foundation Repair
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joists are pulling away from sill plate
Sagging floors, over spanned joists, load bearing walls without
Joist Sistering: The Key To Repairing Floor Joists
How To Fix Sagging Floors! Sistering Floor joist.