A building envelope is the separation between the inside and outside of a building. It serves as the outer shell to protect the indoor environment as well as to facilitate its climate control.
Building envelope design includes six major performance objectives:
- Structural integrity
- Moisture control
- Temperature control
- Control of air flow
- Control of lightrays (in but also out)
- Control of soundwaves (in but also out, in Auroville)
This envelope include the foundation, roof, walls, doors and windows. The sizes, performance and compatibility of materials, fabrication process and details, their connections and interactions are the main factors that determine the effectiveness and durability of the building enclosure system.
See also Climate of Auroville's area.
In North east Australia (Cairns) they have a similar climate as us: see here how they build with steel and wood.