What effect can thermal bridging have on energy efficiency?

Thermal bridging occurs when a material that has a significantly higher thermal conductivity than the surrounding insulation creates a pathway for heat to flow through. This phenomenon contributes to localized areas where heat transfer can occur more readily than in the insulated areas of the building envelope. As a result, thermal bridges can cause increased heat loss during colder months and, conversely, heat gain in warmer months.

By creating these areas of heat loss, thermal bridging decreases overall energy efficiency. This inefficiency leads to higher energy consumption as heating or cooling systems have to work harder to maintain a consistent indoor climate, ultimately resulting in increased utility bills and a higher environmental impact. Addressing thermal bridging through thoughtful design and construction techniques, such as using thermal breaks or better insulation, is crucial for enhancing energy efficiency in buildings.