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Thermal bridges are pathways where heat transfer increases due to higher-conductivity materials (like wood studs or metal fasteners) through insulation.
Steg-för-steg-guide
- 1Heat flows through low-resistance path, bypassing insulation
- 2Calculate effective R-value accounting for framing fraction
- 3Impact: 10-30% heat loss through bridges in typical construction
Lösta exempel
Ingång
Wall R-19 insulation, 20% area framed with wood (R-6)
Resultat
Effective R ≈ 14.3 (25% lower than ideal)
Framing impact significant
Vanliga misstag att undvika
- ✕Ignoring thermal bridge impact in energy calculations
- ✕Using plastic fasteners without verifying strength
Vanliga frågor
How do you minimize thermal bridges?
Use continuous insulation outside frame, or use low-conductivity fasteners (composites instead of metal).
Are they really important?
Yes, cold spots from thermal bridges cause drafts, condensation, and mold. Addressing them improves comfort significantly.
Redo att beräkna? Prova den kostnadsfria Thermal Bridge-kalkylatorn
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