Contractor responsible for preparing the ceiling and painting, neglected to mention the ceiling for bathroom is visibly uneven. 7cm difference from one end to the other. Looks also a bit concave. The contractor said it's not his responsibility and blamed it on someone else. Said best way to fix it is buying trims to cover up the edges between wall and ceiling. And advised against tearing it down and starting again, waste of time and still might end up uneven. Is he right?
In many cases a ceiing in an older home if replaced needs to have an attic strongback installed to occomdate the new ceiling. As a home shifts with settlement of ground and foundation the current strongbacks are compromised. So when installing ned to old, the old ceiling joists need to be supported. When the old drywall was removed, the old strongback releases pressure and caused the joists to shift. So work must be done to the structure of the attic. It is obvious that the strongbacks and the joists are drooping. Is it the drywall guys fault? Yes and no. He is not a structure contractor. It is the General Contractors fault. And if the home owner was the GC...it is the inexperience of the homeowner. When you hire a finisher to repair problems, you have bad results. In a court situation if you attempt to litigate, the finisher will win the suit as he is there to install the drywall to the existing structure only...He does not have the skills for anything else.
If your contract stipulated that the ceiling should be level and even, then you should get that.
If it's not in the contract, it's not the fault of the trades.
You could tear everything down and get it perfect, but the cost/results ratio might not seem very good. I'd wonder if the contractor is hedging because he doesn't want to do it.