So, this one is a bit longer and contains a lot of information. Sadly, this is an area where many inspectors seem to be confused and lacking correct information. Dr. Lstiburek is a pioneer in his field and has contributed to the progress of the building codes we have today. If, after watching his presentation, you are wanting to learn more, I suggest Matt Risinger's Youtube channel. Matt provides some great information regarding conditioned attic spaces and the necessary components for these spaces to function correctly.