Building Enclosures Durability Analysis with 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.

Learning Objectives:

1. Learn climate-specific design strategies for durable construction.
2. Learn to avoid common mistakes that can lead to mold, rot, mildew, corrosion and decay.
3. Understand how hygrothermal modeling can be used in the design process to ensure durability.
4. Learn how material properties (permeability, heat capacity, density, conductivity, and porosity) impact wall assemblies.

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Keith Simon, FAIA, CPHC, BECxP, CxA+BE, LEED AP, CEI, VP, Design Phase Services, Salas O’Brien

An expert in building enclosure technology, Keith Simon addresses the critical and often unmet need for ensuring and improving building performance, resilience, and durability by guiding design teams, educating future architects, and facilitating interdisciplinary exchange. With more than 20 years of experience in the industry, Keith is Vice President of Design Phase Services at Salas O’Brien. Additionally, he serves as the Chair and Founder of the Austin Building Enclosure Council, Vice Chair of the NIBS Building Enclosure Technology and Environment Council (BETEC), Scholarships Chair for the Society of Building Science Educators (SBSE) and has been adjunct faculty at the University of Texas School of Architecture since 2011.