[Astroman (Andrew Wall)]

Anyone have any idea what I could use for an insulator in my dome? It is metal sheet skinned with square tube frame (20mm) I was thinking of polystyrene, what do you think?

I am trying to dampen out the sound as the dome rotates (my sone aged 3 thinks its a thunderstorm approaching) And at 2am is quite loud.

Also trying to stop a bit of condensation.