I am puzzled at the magnitude of the term "downward surface convective coefficient" commonly used in calculating ceiling flux in unvented attic spaces (in hot climates).
A figure of 1.5 W/m².K seems to be the norm.
A white metal roof of low absorptivity with a radiant barrier underneath...
I just finished my first floorplan (A2K) in Modelspace and then tabbed to Paperspace. The screen went gray. I opened a viewport. The window landed miles away from the white layout page (by scrolling I could just see it on the edge of the screen). Whenever I tried to manipulate the Paperspace...