What is one of the main concerns with unconditioned spaces in building design?

One of the main concerns with unconditioned spaces in building design is the potential for mold growth. Unconditioned spaces, such as attics, crawl spaces, and basements that lack proper temperature and humidity control, can create an environment conducive to mold. Warm air rising and cooler surfaces can cause condensation, especially in high-humidity areas. Without adequate ventilation and temperature regulation, moisture can accumulate, leading to the ideal conditions for mold spores to thrive. This can pose serious health risks, such as respiratory issues, allergic reactions, and other health problems for the occupants of the building, making it critical to address moisture management in these areas during the design phase.