Thermal Insulation R-Value & U-Factor Wall Calculator
Calculate composite wall R-values, heat transfer U-factors, and hourly BTU heat loss across stud cavities and continuous exterior insulation.
Inputs used by this tool
Enter values in the interactive controls when the page loads. The result depends on the assumptions and units shown for each field.
Input type: number
Input type: number
Input type: number
Input type: number
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