Level 1
16106 - Introduction to Low-Slope Roofing
Robot Welding for Low-Slope Roofing
16104 - Substrates, Decks, and Roof Insulation
How to Plan a Balanced Attic Ventilation System
Level 2
16201 - Asphalt Shingle Roof Systems
How to Install Timberline HD Shingles with the Closed-Cut Valley Method | GAF Pro Series
16204 - Slate Roof Systems
Slate Roof Installation
16206 - Thermoplastic Roof Systems
Basic TPO Hand Weld Techniques
16210 - Liquid-Applied Roofing
Applying Liquid Membrane HydroStop
Miscellaneous
GAF "Roofing It Right" Video Series
