What is a potential drawback of moisture in insulation?

Moisture in insulation can significantly decrease the R-value, which is a measure of thermal resistance. When insulation absorbs moisture, its ability to resist heat flow diminishes because the water reduces the effectiveness of the insulating material. This means that instead of providing the intended thermal barrier, moist insulation can lead to increased energy costs and discomfort within a building. In essence, maintaining the integrity and dryness of insulation is crucial for achieving optimal thermal performance and energy efficiency. Hence, identifying and addressing any moisture issues in insulation is vital for preserving its functionality.