Air Seal Attic Baffles

Baffles redirect airflow up over the insulation and they re the p.

Air seal attic baffles.

The foam block should sit flush over the exterior sheathing on the outside and the interior drywall on the inside. Attic ventilation works on the principle that heated air naturally rises primarily utilizing two types of vents. Basic functions of baffles 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. Typically made from polyvinyl.

Baffles are a critical component to our attic insulation process that provides multiple benefits to a difficult construction aspect. From left to right air flows through the soffit vents up over the baffles allowing for the required roof venting. Combined with attic insulation air sealing can help to alleviate the formation of dangerous ice dams in the winter. An attic baffle is simply an item to regulate the flow of air aka required roof venting and impede it the insulation from interfering with each other.

Seal air leaks gaps in the attic or between the lower floors and the attic will let heated or cooled air escape to the great unconditioned outdoors making any insulation you add essentially useless. Product overview for improved air circulation in the attic install the durovent 22 in. The picture below courtesy of the epa indoor airplus program which we provide builder verification services for helps show how the system works. Baffles provide a channel for air to flow through certain parts of the attic.

Provides the best moisture and air infiltration seal between the rafter vent and wall top plate. Air seal the attic baffle once the attic baffle is fixed in place seal the drywall edge against the interior wall with a bead of foam sealant then fit one of the foam blocks horizontally over it. The attic is usually where you can find some of the largest opportunities to save energy in your home. Windblock rafter infiltration block.

Find a diagram of common air leaks here here s a quick primer on fixing draft prone spots. It can be cut to fit most joist spaces and is an affordable way to meet energy code requirements for air flow. Polyboard material is waterproof and prevents moisture infiltration. Attic baffles how they work.

The number one prep step. Baffles are also called wind baffles venting chutes rafter vents or insulation baffles. Works well with durovent and provent to provide a moisture impervious vent and block system. Use it between rafters to create an air channel through insulation to help keep air flowing freely in your attic.