Building envelope commissioning
Building envelope commissioning, or building enclosure commissioning, abbreviated as BECx, refers to the quality-focused process that a building undergoes in order to ensure its performance against defined objectives and criteria, specifically referring to objectives concerning the building envelope. Walls, floors, roofs, fenestration, and doors typically comprise the building envelope. Therefore, commissioning objects associated with BECx include heat flow, air flow, noise, light, fire precautions, rain and moisture penetration, durability, structural performance, and aesthetics, among others. While BECx begins in schematic design, the work can essentially be boiled down to building science and building testing. Building science involves studying the flow of heat, air and moisture across all 6 sides of the building enclosure – the walls, roof and slab.