What is thermal bridging and its effect on energy efficiency?

Thermal bridging refers to the phenomenon where heat flows through a conductive material, creating a path of lower thermal resistance compared to surrounding insulation. This results in increased heat loss in those areas where thermal bridges occur, such as through metal beams, concrete, or other materials that conduct heat effectively. When these materials are connected to the exterior, they can significantly compromise a building's energy efficiency by allowing heat to escape more easily, leading to higher heating costs and uncomfortable temperature variations within the building.

In the context of energy efficiency, understanding thermal bridging is crucial because it highlights areas that may need additional insulation or alternative building methods to mitigate heat loss. Addressing thermal bridges can greatly enhance a building’s overall energy performance, making it more comfortable and economical to heat or cool.