Vented Attic Definition

Prior to installing the ridge vent a 1 inch wide strip of roof decking is cut out along both sides of the ridgeline to allow for air movement through the vent.

Vented attic definition.

It is important that air movement occurs and is not impeded by any framing members of the. Power gable vent shutter is automatic 20 in. In cold climates the primary purpose of attic or roof ventilation is to maintain a cold roof temperature to control ice dams created by melting snow and to vent moisture that moves from the conditioned space to the attic ventilation acts to bypass the vapour barrier created by most roof membranes. A vented attic system refers specifically to having working vents in the attic.

Attic ventilation works on the principle that heated air naturally rises primarily utilizing two types of vents. About 90 percent of homes in the us have unreasonably high levels of moisture. In essence all ventilation is about circulating air to keep it fresh and to reduce moisture levels. Good ventilation allows the heat and moisture to escape.

For example in the summer months your attic is likely going to be very hot. And i mean completely intact. However unvented attics can reduce residential energy needs and are allowed by the code under certain conditions. A ridge vent is a ventilation strip that is placed along the ridgeline of the home.

In the winter warm moist air seeps into the attic from the living space below. A vented attic is one where air flow enters the soffits flows through channel vents along the roof sheathing and out the peak through gable or ridge venting. Power gable vent shutter is designed to be used with master flow egv pg series electric gable fans. Those vents in the attic allow for airflow and that airflow moves the hot air and moisture out of the attic.

That cuts cooling costs and prolongs shingle life. Constructed of white aluminum that can be painted. An unvented attic is one which is not ventilated and this is important one where the ceiling has complete air vapor and thermal controls in place. The shutter will open when the electric gable vent is operating.

Few things are more misunderstood about the home than attic ventilation.