What is the purpose of a ridge vent in roofing?

A ridge vent plays a crucial role in maintaining proper ventilation in a roofing system. Its primary purpose is to facilitate the escape of hot air from the attic space. This is important because as temperatures rise, the accumulation of heat can create a buildup in the attic, leading to increased energy costs and potentially damaging the roofing material and home structure.

The ridge vent works in conjunction with soffit vents, which allow cooler air to enter the attic from the eaves. As cool air enters, it pushes the hot air upward and out through the ridge vent. This natural airflow helps to keep the attic cooler, improving the overall energy efficiency of the home and extending the life of the roofing materials.

Additionally, effective ventilation can help reduce moisture buildup, which is vital in preventing mold growth and maintaining structural integrity. However, the primary and most direct function of a ridge vent is to enhance airflow by allowing hot air to escape, making option B the correct choice. The other options, while they may touch on secondary benefits of proper ventilation, do not accurately reflect the main purpose of a ridge vent.