The performance of a building, and the interaction with the architectural finishes that it supports, have been perplexing issues that the AEC industry has faced for many years. In a perfect construction world, we would be able to design and construct a building that could stand on its own with standard detailing that connects everything together starting at the roof to the walls to the foundation. Unfortunately, this is not the case as the structure is going to experience active live loading by the occupants on the floors, exposure to temperature differentials from the environment and motions due to wind and/or seismic activity during the life of the building. These events cause vertical and horizontal movements that must be addressed to prevent cracking, etc., in the exterior and interior finish systems. Generally, these issues tend to happen after all construction crews have moved on to the next project and require subsequent efforts to repair that are probably not budgeted in the original project fee (i.e., out of pocket expense to correct).