What does thermal bridging refer to?

Thermal bridging specifically refers to a process where heat is transferred through building materials that are less resistant to heat flow compared to surrounding insulation. This phenomenon occurs when there are pathways through which heat can escape or enter a building, bypassing the insulating material intended to minimize heat loss or gain.

For example, in a wall with insulation, if there are metal studs or concrete blocks, these materials can conduct heat more effectively than the surrounding insulation, allowing heat to "bridge" from the warm side to the cold side. This leads to increased energy costs and can cause issues such as condensation or mold growth if not properly managed.

Understanding thermal bridging is crucial for effective building design and energy efficiency, as it directly impacts the overall thermal performance of a building. Recognizing the significance of materials and construction techniques in reducing thermal bridges can lead to better insulation strategies and reduced energy consumption.