What can lead to moisture buildup in the attic?

Moisture buildup in the attic is primarily linked to improper ventilation. When an attic lacks adequate airflow, warm, moist air can become trapped, leading to condensation on cooler surfaces, such as roof sheathing. This trapped moisture not only creates an uncomfortable environment but can also promote mold growth, wood rot, and a host of other structural issues.

While over-insulation and inadequate roof pitch can also contribute to problems in an attic, they do not directly lead to moisture buildup in the same way that improper ventilation does. Over-insulation can restrict airflow, but it is the lack of ventilation that is the primary cause of excess moisture. Similarly, an inadequate roof pitch might affect water drainage but is not inherently a driving factor for moisture accumulation. Thus, focusing on proper ventilation is key to preventing moisture-related issues in attics.