What is the role of baffles in attic ventilation?

Baffles play a crucial role in attic ventilation by directing airflow along the eaves, which helps to maintain open channels for air movement. In a properly ventilated attic, baffles facilitate the flow of fresh, cooler air from the soffit vents to the higher exhaust vents, such as ridge vents. This airflow is essential for reducing heat buildup in the attic space during the warmer months and for helping to prevent moisture issues that can lead to mold and structural damage.

By ensuring that insulation does not obstruct the vents from the eaves, baffles provide a clear path for air, allowing it to circulate effectively. This is vital in promoting efficient ventilation, as stagnant air can lead to increased temperatures and humidity levels in the attic, compromising the overall integrity of the roofing system.

The other roles mentioned in the choices do not correspond with the primary function of baffles in ventilation. While blocking wind or preventing moisture would benefit attic conditions, these actions are not the primary duties of baffles. Similarly, while baffles can have one indirect effect on heat management because they help maintain ventilation, they are not insulation barriers in themselves. Their main purpose is to ensure unobstructed airflow, making option B the most accurate representation of their role.