IRC2018N1101.3

Climate Zones

Plain-English Explanation

Section N1101.3 establishes energy efficiency requirements for climate zones. These requirements help reduce energy costs and ensure your home meets minimum insulation and efficiency standards for your climate zone.

For the Contractor

Per IECC N1101.3 (Climate Zones): verify R-values, U-factors, and SHGC meet climate zone requirements per Table R402.1.2. Document insulation labels and depths before covering.