What is a ridge vent?

A ridge vent runs continuously along the highest point of a roof where two slopes meet. It creates an exhaust pathway for hot, humid air that builds up in the attic space. The vent is typically covered with a ridge cap or baffle to prevent rain and snow from entering while allowing air to flow upward and out.

Ridge vents work as part of a balanced ventilation system. Soffit vents, installed under the roof overhang, pull cool outside air into the attic at the lowest point. As that air warms and becomes lighter, it naturally rises toward the peak and exits through the ridge vent. This passive airflow reduces attic temperature and removes moisture that can lead to wood rot, mold, and premature shingle failure.

Without proper attic ventilation, moisture accumulation shortens the lifespan of framing members and insulation. In Connecticut's climate, where humidity levels fluctuate with the seasons, this passive exchange is especially important during summer heat buildup and winter freeze-thaw cycles. Roofing contractors typically install ridge vents during new roof installation or replacement to meet building code requirements for attic ventilation.