Order of drywall and plaster - What to install first?

Hello,

the interior finishing of the top floor ceiling is currently being done in our single-family house. Under the rough boarding, there will be 22 cm of mineral wool, below that the vapor retarder, then the battens. After that, the electrician will lay his cables, then the drywall panels will be installed, and afterwards the interior plastering will begin. According to the drywaller, he always works in the order of drywall then plaster; is that correct, or does it have to be the other way around? I am concerned about the moisture and the risk of mold growth in the drywall panels!

According to the drywall installer, he always works in the order drywall then plaster, is that correct, or should it be the other way around? I am concerned about moisture and the risk of mold growth in the drywall panels!

The drywall panels are usually fully skimmed anyway if good quality is required. Besides, transitions should also look neat.

Where is the problem?

Just don't forget to ventilate properly.