Lumifoil is a temporary roof canopy at the Florida International University Paul L. Cejas School of Architecture. Our goal was to introduce a new “intrusion” at the heart of what FIU Architect Bernard Tschumi coined the “red generator,” thereby heeding his call for provocation in the form of an architectural intervention. This proposal responds to Tschumi’s discourse and the building itself might apply to the parametric digital project. Rather than design a canopy that is entirely emergent – a bottom up strategy in which the whole is the sum of its parts, and be definition, disconnected from its environment – we began with an overall form that is derived via a series of projected geometries generated directly from the cut out’s in the building’s envelope. These invisible forms intersect inside the empty container, providing a framework for generating a new surface.