A contractor in Pennsylvania installed new subflooring and a linoleum floor in my kitchen and there are issues. There is a “lump” (2-feet across, 8 feet long) in front of a door with a pitch of ~2 inches per ten feet as you move across the kitchen. We had hired a carpenter they recommended to replace a spot in the plywood where that lump is now seen. After he patched the plywood, their team okayed it and put down subfloor and linoleum, giving us the 2" every ten foot pitch. The sent an inspector from their company who indicated (on the sly) had “elevated floor joists” where the lump is that probably should have been leveled before the second team put down the sub-floor. The compnay sent a letter stating that the floor joists were the issue, the floor pitch was not their problem and that they would cut the legs of our kitchen table so it would no longer wobble, if we wanted them to.
Are there specifications or code for the pitch of a floor that state they should not have laid the floor until the joist/subfloor issue was resolved ?