Often times, the greatest challenges in the design of a building enclosure (the "cladding") lies in the details. The details are what ensure that the building is air, water, and thermally insulated from exterior conditions.
Many of these details are not well understood because, due to their three-dimensional character, are hard to envision from two-dimensional construction documents. Yet, these details can cause catastrophic enclosure failures if not properly designed.
I have modeled technically complex interfaces in building enclosures in an attempt to help design solutions in problem areas, and have used them in meetings to quickly and clearly convey the technical issue at hand.