Prevent the formation of ice dams.
Properly vented attics help prevent the formation of ice dams, which results in less damage to the interior of the house and longer lasting roofs. When heat from your home escapes into the attic, that heat can melt snow on the roof. This water flows down the roof, under the snow, onto the eave and gutter, where cold temperatures cause it to freeze. Eventually, ice accumulates and prevents additional snow melt from draining; it then backs up under the roof covering, resulting in leaks, damaged ceilings, walls, roof structure and insulation. Powered Attic ventilation helps maintain an even temperature throughout the attic, preventing hot and cold spots that can lead to ice dams.