Your course makes the statement on slide 20 that Building Codes no longer require a thermal barrier. Can you email more specific info. on what you are referring to there as in our area it is still common practice to use a thermal barrier when installing EPS over a steel deck. Thanks, Vernon Weaver

In the US thermal barrier is excluded on rolling doors, garage doors operators, access panels, vehicular gate openers and also when hot asphalt is used in roof assembly to adhere EPS insulation to wood fibreboard or gypsum board serving as either the thermal barrier or protection board in the roof system.

Although passing course, I found the "ECO" aspect of a normal roofing course to be overly complex and self-agrandizing....