The enclosure (exterior walls and roof) that defines the heated/cooled area of a building.

The exterior surface of a building that separates the indoor heated air from outdoor air.

The skin of a building—including the windows, doors, walls, foundation, basement slabs, ceilings, roof, and insulation—that separates the interior of a building from the outdoor environment.

According to 10 CFR 434.201 [Title 10 – Energy; Chapter II -- Department of Energy; Subchapter D -- Energy Conservation; Part 434 -- Energy Code for New Federal Commercial and Multi-Family High Rise R [..]

A building envelope includes all components of a building that enclose conditioned space. Building envelope components separate conditioned spaces from unconditioned spaces or from outside air. For ex [..]

Elements of the building, including all external building materials, windows and walls, that enclose the internal space. Ceiling Plenum

The exterior surface of a building’s construction – the walls, windows, roof and floor. Also referred to as “building shell.”

The exterior surface of a building's construction--the walls, windows, floors, roof, and floor. Also called building shell.

The exterior surface of a building's construction--the walls, windows, floors, roof, and floor. Also called building shell.

The basement walls, exterior walls, floor, roof and any other building element that enclose conditioned spaces. Soil depressurization fans must be installed outside of the thermal envelope.

Building Envelope are elements of the building, including all external building materials, windows, and walls, that enclose the internal space.

The ‘Envelope’ of the home is architecture-talk for the outside layer of the building. In modern buildings, this ‘envelope’ is made of many layers, each with a special role to play. Cutting edge mater [..]

The elements of a building, including all eternal materials, windows and walls, which enclose internal spaces.

The outer shell that separates the the interior and the exterior environments.

Exterior components of a house that provide protection from colder (and warmer) outdoor temperatures and precipitation; includes the house foundation, framed exterior walls, roof or ceiling, and insul [..]

Elements of the building, including all external building materials, windows, and walls, that enclose the internal space.