What is the R-value of common "1/2-inch wood sheathing" used by many builders?

The R-value measures the thermal resistance of a material, indicating its effectiveness as an insulator. For common "1/2-inch wood sheathing," the R-value is typically around 0.6. This value reflects the material's ability to slow the transfer of heat and provides a basic understanding of how wood sheathing contributes to the overall energy efficiency of a building.

Wood sheathing is often used in building construction for structural support and insulation. The relatively low R-value of 0.6 indicates that while wood sheathing does have some insulating properties, it should not be relied upon as the primary source of insulation in a building. Instead, it is usually combined with other insulation materials to enhance overall thermal performance.

In contrast, higher values associated with thicker or more insulating materials would be more effective for thermal resistance, which is why wood sheathing is often paired with additional insulation in wall assemblies. Understanding the R-value of materials like wood sheathing is essential for home inspectors and builders to ensure proper energy efficiency and building performance.