An interior food service facility wall surface should NOT be constructed of which material?

Wallboard is not an ideal material for the wall surfaces of an interior food service facility because it is not suitable for wet or potentially hazardous environments. In food service settings, walls must be easily cleanable and resistant to moisture and microbial growth, which can be prevalent in environments where food is handled and prepared. While wallboard can be affordable and easy to install, it is susceptible to damage from water and moisture, leading to mold and deterioration over time.

In contrast, materials such as concrete, fiberglass-reinforced plastic, and stainless steel are more appropriate for food service facilities. These options are typically non-porous, durable, and can withstand the rigorous cleaning and sanitation processes necessary to maintain a safe food preparation environment.