Andrea Wagner Watts is the Building Science Education Manager for GAF | Siplast Building & Roofing Science, engaging with industry professionals to provide guidance, technical support and education for roof and wall assemblies. With more than 15 years of experience in the industry, Andrea strives to improve the overall performance of the building enclosures through application innovation, product development and building science research. Andrea has published on building science, assembly interfaces, durability and resilience and holds multiple patents. She is the chair of the Air Barrier Association of America and chairs the ASTM E06 and D08 Task Groups on air barriers assemblies.
Courses
The data is in! Embodied Carbon & Code Compliance of Your Roof Assembly
Reducing the total carbon footprint of buildings is a frequent goal for designers, and the roof can be a strong contributor to that mission. Imagine if these goals can be achieved using the roof you already specify. It’s not a fantasy. This presentation will dive into the details of how you can take a code compliant roof assembly to the next level. We will share data on how the choice of materials can impact the total carbon footprint of a project, and specifically the embodied carbon. It will also show examples on ways to improve the energy efficiency of a roof assembly and the impact it has on overall building performance across all climate zones. Finally, the presentation will provide attendees with examples of how to use environmental product declarations (EPDs) and energy analysis tools to do similar evaluations for their specific projects.
This session was recorded live on April 24, 2025.
Adventures in Hygrothermal Modeling
Hygrothermal modeling, the analysis of heat and moisture transport through building enclosure assemblies, reveals many of the climate-specific building science secrets that are key to durable design of walls and roofs and other assemblies. Debunking rules of thumb and avoiding answers of “it depends” – data and analysis can reveal exactly how many inches of a certain insulation are required, exactly what perm-rating will optimize an assembly, and what kind of havoc a reservoir cladding system can create. Case studies will be shown that demonstrate when perm rating matters and when it does not, the impact of roof membrane color and the risks of “cool roofing,” and when HT (high-temp) rated membranes are actually required. This presentation’s ulterior motive is to convince the audience that every architecture firm should be doing in-house hygrothermal modeling as an integral component of climate-specific, durable, and resilient design.
This session was recorded live on August 19, 2025.