Family house has converted the attic into a store room. Did a second ceiling to contain the heat, with extra insulation. And also added the spinning exhaust thing to release the trapped heat.

After that not bad. Not too hot even under afternoon sun.

End up that room is half store room, and half my dad listening room. He add 1 AC up there for when he is there. He also added rockwool insulation to the attic floor so that he can listen at higher volume without disturbing the ppl in the room downstair.