California IDEX Practice Exam

Smooth, nonabsorbent floor surfaces are specifically required in bathrooms according to the California Building Code (CBC). This is essential in places like bathrooms to prevent moisture absorption, which can lead to mold growth and other potential issues. In other areas like living rooms, kitchens, and corridors, while smooth and nonabsorbent floors may be preferred for ease of cleaning and maintenance, they are not specifically required by the CBC.