[euromodder]

Originally Posted by freebeard

Coincidentally, I had this queued up last night and I'm listening right now:

Building a BETTER attic - Unvented + Conditioned attics 101

We've had unvented, insulated attics for decades in Europe

Conditioned when folks wanted the extra living space

And we generally don't use metal roofs
Though they're getting more popular in double roof set-ups with a little updraft-ventilation void between 2 roof layers (one watertight, the other insulated)