What is the definition of the building envelope?

The definition of the building envelope primarily refers to the boundary between the interior and exterior environments of a building. It serves as a separation of indoor and outdoor spaces, encompassing components such as walls, roofs, windows, and doors. This enveloping structure plays a crucial role in regulating the indoor climate, energy efficiency, and overall comfort of the occupants.

By functioning as a barrier, the building envelope not only protects against weather elements but also helps in managing heat, air, and moisture transfer, thereby contributing to the building's performance and sustainability. Understanding this concept is essential for building analysts, as it informs decisions regarding insulation, ventilation, and overall energy efficiency strategies.