What is the result of having blocked eave ventilation openings?

Blocked eave ventilation openings lead to trapped moisture accumulation in the attic or roof space. Proper ventilation is essential in preventing moisture buildup, which can arise from various sources, including everyday activities like cooking and bathing, as well as from the natural humidity of the air. When eave vents are obstructed, the air cannot circulate effectively, which can cause humidity levels to rise.

This trapped moisture can lead to a multitude of issues, including the growth of mold and mildew, wood rot, and deterioration of roofing materials. Furthermore, excess moisture can significantly impact insulation performance, reducing its effectiveness and possibly leading to heat loss or gain in the home.

In contrast, effective attic cooling, improved insulation performance, and enhanced air circulation rely on unobstructed ventilation pathways that allow for proper airflow to manage temperature and moisture levels effectively. Therefore, having blocked eave ventilation openings jeopardizes these critical functions, principally contributing to moisture accumulation issues.