Indoor climate combines all the elements of temperature, humidity, lighting, air quality and ventilation in residential buildings. Most of these elements relate to the health and comfort of building occupants. Moisture intrusion in a wall system can cause numerous building defects as well as health ailments for building occupants. This course will review the cause and effects of moisture intrusion and discuss how fiber cement panels can be used as a rainscreen to mitigate moisture. We will identify different rainscreen technologies and ASTM and AAMA testing standards that measure their performance.