Thank you Aton & Ron.
FYI:
The floorboards are perpendicular to the joists. Could you please expand on what you mean by "joist deflection". What would be the course of action to take if this is the cause of the buckling? (Which, by the way, has not subsided, and has come up in...
Several months ago, we had the floorplan on the second story of a 1920 2 story home altered to:
1) remove a one non-load bearing wall (one of two that make up the bank of closets between 2 bedrooms) to make the master bedroom larger. The perpendicular dividing wall between the 2 closets of...
