Bob Scribner of G.F. Sprague is onsite in Needham, MA at a customer's home where the G.F. Sprague crew is installing a soffit vent in the eave of the roof. The soffit vent is part of a larger roofing ventilation system that keeps your home cool in the summer and warm in the winter. Another important benefit of installing this roofing ventilation system is the prevention of ice dams. Here, with good airflow up through the eaves and roofing rafters, hot and cold spots are eliminated. It is these hot and cold spots on your roof, especially near the eaves, which lead to troublesome and costly ice dams.