Hole in plastered ceiling next to radiator pipe

[Niklas777]

I have hired painters to plaster and install microlit on a previously lowered ceiling. Around the radiator pipes that go between the floors, there is now a large hole. How can this be best sealed? The painter suggests it will be difficult to fill the back between the pipes and the wall, and that condensation may form. I argue that there is no risk as the pipes contain hot water. How can this be sealed in the best and most aesthetically pleasing way? I don't want an ugly hole around it, which also makes it noisier with the neighbor.

 

[jonko]

Patch as best as possible and possibly use a couple of cover plates if the desired finish is not achieved.

 

[A.G]

Perhaps complete with Byggfog after the spackling?

 

[Niklas777]

I hired painters to plaster and install microlit in a previously lowered ceiling. Around the radiator pipes running between the floors, there is now a large hole. How is this best sealed? The painter claims it will be difficult to fill the backside between the pipes of the wall and suggests that condensation might form. I argue there's no risk since the pipes contain hot water. How is this best and most neatly sealed? I don't want an ugly hole around it, which also makes it noisier with the neighbor.