Which option is NOT recommended for fascia signage on a canopy walkway in a strip mall with a quick turnover of tenants?

• A. Plywood sheathing installed on the framing behind the weather barrier and finish material.
• B. Soffit panels installed in canopy to access the back of the fascia wall.
• C. Field-painted fiber cement panels directly applied over the weather barrier and direct to sheathing.
• D. Pre-finished corrugated metal wall panels directly over the weather barrier.

Answer: (D)

Substrate selection for fascia signage on a canopy walkway must provide a stable, flat mounting plane that remains weatherproof while allowing easy sign changes for quick tenant turnover. Installing pre-finished corrugated metal wall panels directly over the weather barrier fails to meet that need. The corrugations create an uneven surface, making it hard to securely mount signs and achieve a clean, uniform appearance. This setup also risks moisture trapping between the weather barrier and the metal panel, which can lead to corrosion, deterioration of the barrier, and costly repairs—problems magnified when tenants turn over frequently. In contrast, the other options offer substrates that create a true, continuous plane for signage and permit straightforward maintenance or replacement: plywood sheathing provides a solid base behind the weather barrier and finish material; soffit panels can give controlled access to the back of the fascia wall for servicing; field-applied fiber cement panels offer a rigid, durable surface that can be finished and rebranded as needed.