Erin Andes is a Building Design Manager for GAF, focusing on the Western U.S. As a member of the GAF | Siplast Building and Roofing Science Team, she works with designers to review project designs to mitigate risk and achieve affordable, durable, watertight, and energy-efficient roof assemblies. Her background includes building enclosure consulting on new construction and enclosure rehabilitation of a range of project types such as multi-family, commercial, institutional, religious, cultural, and healthcare buildings. In addition, Erin has provided investigation and litigation support services on building enclosure and product failures giving her great perspective on what to avoid in new construction and repairs. Erin is a Professional Engineer in multiple states and holds a Bachelor's degree in Architectural Engineering from California Polytechnic University and a Master’s Degree in Civil Engineering from Georgia Institute of Technology.

Michael Popeck, RRC is the Northeast Design Manager of Building & Rooing Science for GAF | Siplast.  Michael is a Registered Roof Consultant (RRC) with over 20 years of experience specializing in low-slope roofing & general building enclosure consulting (roofing, walls, windows, doors, etc.) and will use this experience to interact with other design professionals (Architects, Engineers, Consultants, etc.) to help promote best roofing & design practices throughout the industry.  Michael possesses a proficiency with forensic architecture, assessment, testing, and design remediation of existing structures in a wide variety of different sectors (K-12, Higher Education, State, Residential, Commercial).