What drives the decision
Glass construction, coatings, access, weather and manufacturer compatibility determine which position is appropriate.
What changes the budget
Exterior installation can require access equipment and weather-sensitive scheduling.
Operations and lifecycle
Exterior products face direct weathering and may have different warranty expectations.
Planning boundary
Installation position should follow the exact film/glazing system requirements, not convenience alone.
Educational planning only. Actual construction, code compliance, regulated systems, hazardous materials and safety-critical work require qualified professionals and current local requirements.