[JKCalhoun]

In theory, houses are close to this. The attic is supposed to allow air to flow—the house itself having an insulating blanket on all sides.

My home though appears to have very limited air flow in the attic-space. I'd like to get those "twirly things" installed on the roof to bring the attic-space air temperature down.

[franktankbank]

I have a temp controlled fan (I should verify its working). The thermostat is downstairs so the upstairs where we slept was generally 5 F hotter. Installed that fan near the roof peak (actually replaced an existing vent) and it made a big difference in the summer.