In October, I published "Tegularity," a discussion of the proper term for acoustic ceiling panels. (The title came from the name for a specific type of panel edge.) Shortly thereafter, in December 2016, I received a question from Anthony Capkun, editor for Electrical Business Magazine and former editor for the Construction Specifier. He asked, "What is the correct term these days: a) Building Envelope or b) Building Enclosure?"
I responded that I had always used building envelope, and that that is the term I hear most often. But, having learned a long time ago that always hearing a term used in a particular manner does not mean that that is the correct term, I decided to investigate further.