This comprehensive publication provides a convenient reference for regulations in chapters 12 through 43 of the 2021 International Residential Code (IRC®).

The commentary series is presented in an easy-to-understand format. Every chapter begins with "General Comments" and "Purpose" sections followed by code and commentary to subsequent sections, tables and figures. This in-depth publication focuses on providing the full meaning and implications of the 2021 IRC®. The commentaries are designed to suggest the most effective method of application, and the consequences of not adhering to the code.