Filling gaps between bay windows

Kaylg

Member
Before I clip on the interior pvc trims, I want to fill the joins between the windows for maximum sound insulation.

What would you say is best?
  • Silicone
  • Caulk
  • Expanding foam
  • Something else

What I am referring to:
20200827_070856.jpg

Thanks
 
They should have been made properly, without the need for any bodger bead to cover that up.
I would complain and get them to make the window correctly.
 
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