Thermal Resistance
Calculator
Thermal Resistance
Calculator
Calculate thermal performance.
Prove Code compliance.
Explore better-than-code options.
Calculate thermal performance.
Prove Code compliance.
Explore better-than-code options.
Use the Effective Thermal Resistance Calculator to calculate the thermal performance of different building envelope assemblies using Owens Corning® insulation products.
This tool allows you to:
- Calculate the effective thermal resistance of building envelope assemblies
- Combine products from the Owens corning portfolio
- Demonstrate Code compliance—or exceed it
- Create a report (PDF) that confirms assembly performance based on materials chosen
Select an assembly below to begin. Once your calculations are complete, you can download or email a summary PDF of your results from the Results Summary tab.
Location
| Province | — |
|---|---|
| Region | — |
| Heating Degree Days | — |
Assembly Type
Results
| Entire Assembly (Effective Thermal Resistance) | RSI | R |
|---|---|---|
| Effective Thermal Resistance of Assembly | - | - |
| Center of Cavity | - | - |
| Installed Insulation (Nominal) | - | - |
The Owens Corning effective thermal resistance calculator uses the calculation methodology, material values and framing factors listed in the workbook (CM-1, WA-1/WA-2, Variables). Assembly details are grouped by Continuous and Non-Continuous layers.
Owens Corning has been conservative in our approach when it comes to the thermal resistance values for vented air spaces created by vertical strapping on exterior wall assemblies. The calculator does not attribute a thermal resistance value for the air gap created by the wood strapping or one for any material outboard of such a VENTED space. The user can simply add the values for those layers to the result generated by the calculator if the Province or Authority having jurisdiction recognizes and allows a thermal resistance contribution for those layers.
Please contact your local Owens Corning Technical Services Engineer if you require any assistance or additional information.
Canada inquiries:
Salvatore Ciarlo
Tel: 1-800-504-8294
Email: salvatore.ciarlo@owenscorning.com
Results
| Entire Assembly (Effective Thermal Resistance) | RSI | R |
|---|---|---|
| Effective Thermal Resistance of Assembly | - | - |
| Center of Cavity | - | - |
| Installed Insulation (Nominal) | - | - |
| Vented Air Space | - |
The Owens Corning effective thermal resistance calculator uses the calculation methodology, material values and framing factors listed in the workbook (CM-1, WA-1/WA-2, Variables). Assembly details are grouped by Continuous and Non-Continuous layers.
Owens Corning has been conservative in our approach when it comes to the thermal resistance values for vented air spaces created by vertical strapping on exterior wall assemblies. The calculator does not attribute a thermal resistance value for the air gap created by the wood strapping or one for any material outboard of such a VENTED space. The user can simply add the values for those layers to the result generated by the calculator if the Province or Authority having jurisdiction recognizes and allows a thermal resistance contribution for those layers.
Please contact your local Owens Corning Technical Services Engineer if you require any assistance or additional information.
Canada inquiries:
Salvatore Ciarlo
Tel: 1-800-504-8294
Email: salvatore.ciarlo@owenscorning.com