Q: Why consider ceiling tiles? A: Ceiling tiles can be used as a design feature, but they also cover up the framing of the floor (or roof) above, plumbing, ductwork, wiring, and insulation. Removable tiles snapped into a metal grid are handy because they allow easy access when repairs are needed. It's important to consider the functional requirements of the room that tiles will be used in-be it safe food preparation or good acoustics. At Green Depot, our selections also promise mold resistance, even biodegradability.