How to properly insulate an attic for maximum energy efficiency and comfort?

To properly insulate an attic for maximum energy efficiency and comfort, start by sealing any air leaks and ensuring proper ventilation. Next, add insulation to the recommended R-value for your region. Consider using a combination of insulation types, such as fiberglass batts and blown-in insulation, to achieve optimal results. Lastly, make sure to insulate the attic access door or hatch to prevent heat loss.