Mass walls in combination with insulation can save energy in
buildings. This presentation describes the benefits of thermal mass
(thermal inertia) and how these benefits are recognized in national
energy codes. An overview of compliance paths of these energy codes is
presented. The degradation of the R-value of concrete panels with metal
thermal bridges that pass through the insulation is also described.
1. Identify why mass walls save energy.
2. Learn the heat capacity requirements for mass walls in energy codes.
3. Determine how thermal mass provisions are presented in national energy codes.
4. Learn how metal thermal bridges that penetrate the insulation in a mass wall degrade it's R-value.
Presenter: Emily Lorenz, PE
Emily Lorenz, PE, is an independent consultant in the areas of LCA,
EPDs, PCRs, green building, and sustainability. She serves as an
engineer in the areas of green structures and practices, energy
efficiency, thermal properties, and moisture mitigation. Lorenz also
specializes in green building code and standard work and advocacy.