Attic Air Flow Baffles

These specialty vents do not affect the.

Attic air flow baffles.

For the same reason insulation shouldn t touch the roof s underside. Baffles provide a channel for air to flow through certain parts of the attic. Baffles are chutes that when installed properly can provide a channel for air to flow from your exterior soffit vents up into your attic space. If your attic is well insulated the insulation might be plugging the spaces between rafters just above exterior walls.

That airflow is intended to churn the stale air in your attic which helps to remove moisture and control the temperature of your attic. Use it between rafters to create an air channel through insulation to help keep air flowing freely in your attic. Typically made from polyvinyl. They also keep insulation from falling into and clogging up the eaves.

Baffles are also called wind baffles venting chutes rafter vents or insulation baffles. An attic with balanced ventilation has undereave or soffit vents which allow fresh air into the attic. That means air can t flow from the soffit vents to the roof vents. The fresh air flows up between rafters to the ridge where a ridge vent roof vents or gable vents allow the air to exit.

In brief baffles are designed to provide a channel of air to flow through specific parts of your attic. Product overview for improved air circulation in the attic install the durovent 22 in. Attic baffles how they work. The picture below courtesy of the epa indoor airplus program which we provide builder verification services for helps show how the system works.

The solution is to add baffles which allow air to flow past the insulation photo 9. They can reduce roof deck temperature minimize ice dam issues and can help control attic moisture. They are usually made from cardboard or rigid foam board or polyvinyl chloride. Attic baffles also called channel vents vent chutes proper vent and about 50 other names help direct air flow from the soffit through the attic.

Rafter vents or insulation baffles install in any rafter space to create narrow gaps that direct fresh air from the soffit vents to the peak of the roof. From left to right air flows through the soffit vents up over the baffles allowing for the required roof venting. They are known are also known as wind baffle insulation baffles rafter vents or venting chutes. Baffles are available at home centers.

Staple plastic or foam baffles to the roof sheathing near the eaves to keep the material away. It can be cut to fit most joist spaces and is an affordable way to meet energy code requirements for air flow.