How does the Thermal Bridge Calculator work?

Heat flows through low-resistance path, bypassing insulation Then: Calculate effective R-value accounting for framing fraction Then: Impact: 10-30% heat loss through bridges in typical construction.

Can you give an example of how to use the Thermal Bridge Calculator?

Example: Input Wall R-19 insulation, 20% area framed with wood (R-6) gives a result of Effective R ≈ 14.3 (25% lower than ideal) (Framing impact significant).

Is the Thermal Bridge Calculator free to use?

Yes — completely free with no registration, download, or subscription required. All calculations happen instantly in your browser.

How accurate is the Thermal Bridge Calculator?

Our Thermal Bridge Calculator uses verified mathematical formulas and is accurate to multiple decimal places. Results are calculated in real-time using the same methods used by professionals.

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Thermal Bridge Calculator

Base U-Value (W/m²K)

Bridge Area (m²)

Total Area (m²)

Bridge U-Value (W/m²K)

Thermal bridges are pathways where heat transfer increases due to higher-conductivity materials (like wood studs or metal fasteners) through insulation.

Difficulty:intermediate

References

›Thermal Bridge — Wikipedia

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Thermal Bridge Calculator