The building envelopeconsists of all components that separate the interior from the exterior. The interior of the building allows prevailing comfortable climate whereas the outside is determined by the weather. Roof And Floor System Icf S Insulated Concrete Forms Roofing Systems Roof Construction In your research you may have seen some stuff about sealing up the building envelope but what does that mean exactly. What is building envelope systems . In this session of Foam University you. Improving a structures envelope includes protecting the building from the elements assisting in mechanical load support and keeping the interior safe from outside forces or hazards. While it may not be easily obvious building envelopes play a major role in the energy efficiency of any building. The simplest definition of a building envelope is the exterior part of the house designed to repel the elements. It includes many parts of the structure that are often complex and layered. This inclu