What drives the decision
Different orientations can create different problems, so one film everywhere may not be ideal.
What changes the budget
Occupied-office access, furniture moves and after-hours work can affect cost.
Operations and lifecycle
Post-installation occupant feedback helps verify whether comfort goals were met.
Planning boundary
Film does not replace HVAC balancing or defective-glazing repair when those are the root causes.
Educational planning only. Actual construction, code compliance, regulated systems, hazardous materials and safety-critical work require qualified professionals and current local requirements.