Thermal bridge
（重定向自Cold bridge）
![Temperature distribution in a thermal bridge](/Images/godic/202501/05/Thermal_bridge_by_Zureks5636.png")
![This thermal image shows a thermal bridging of a high-rise building](/Images/godic/202501/05/Aqua_Tower_thermal_imaging5636.jpg")
![Thermal bridge at junction. Heat moves from the floor structure through the wall because there is no thermal break.](/Images/godic/202501/05/Jonction_plancher_haut-mur_extérieur_25637.jpg")
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A thermal bridge, also called a cold bridge or heat bridge, is an area of an object (frequently a building) which has a significantly higher heat transfer than the surrounding materials resulting in an overall reduction in thermal insulation of the object or building. Thermal bridges occur in three ways, through: materials with higher thermal conductivity than the surrounding materials, penetrations of the thermal envelope, and discontinuities or gaps in the insulation material.