The thermal envelope of a building is the union of those structures that separate the conditioned part of the building subject to being heated andor cooled from. The building envelopeconsists of all components that separate the interior from the exterior. Clarke Snell Building Envelope Research Design And Publications Fixing Concrete The Passichanical Wall System Wall Systems Concrete Insulation Concrete Its not composed of one structure though. What is the building thermal envelope . Morrison Hershfield developed the Building Envelope Thermal Bridging BETB Guide in collaboration with various individuals and industry partners. The thermal envelope is everything in a house that helps. A thermal envelope is a very important key element in order to have a well energized home or a low energy home. The building thermal envelope shall comply with the requirements of Sections N110211 through N110215. What is a thermal envelopeThis is a term that is often used by home designers en