sm_jamieson wrote:
Surely the point of a plasterer is to give a flat ceiling? Sounds like
it was a poor job.
Simon.

Nope, the job of a plasterer is to do what the customer asks (and pays) him
to do.

Often there is a rogue joist which is half an inch or more lower than it's
neighbours, there is little a plasterer can do in this situation, unless the
customer wants him to remove boards and affix packers to adjacent joists
prior to re-boarding and plastering, but this is a rarity as no-one wants
the expense or hassle.

Joists sometimes bow the opposite way too, but in these cases it's fairly
straightforward to fill in the low spots