Also in the March 2019 Issue:
What is the building envelope and why does it matter?
Building envelopes are defined as a physical barrier between the conditioned space and unconditioned space and/or the outside of a building. The envelope, however, does more than separate spaces. It is a combination of materials serving several functions, including serving as weather barrier, air barrier, sound barrier, and a natural light and wind barrier.
The temperature of a particular space can have an affect on the mechanical insulation housed there; building envelope can be an important part of regulating this temperature.