The 2021 IECC Climate-Specific Building Assemblies Tool is designed to help builders select foundation, wall, and roof construction assemblies that meet 2021 International Energy Conservation Code (IECC) and 2021 International Residential Code (IRC) requirements for thermal efficiency and condensation control.
The tool addresses each of the IECC climate zones and includes:
- Climate zone look-up by county or zip code.
- Drawings showing section views of building assemblies that safely meet the 2021 envelope requirements are provided in PNG and PDF formats.
- Case studies of actual projects that have met the prescriptive 2021 requirements are presented.
For additional, updated information on hundreds of building science topics that can help you build or retrofit to the most recent high-performance construction criteria, including the latest version of ENERGY STAR and the DOE Zero Energy Ready Home requirements, see the Building America Solution Center.
Featured Publications
Guide to Determining Climate Zones by County: Building America and IECC 2021 Updates