The picture below courtesy of the epa indoor airplus program which we provide builder verification services for helps show how the system works.
Air baffle attic.
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 foam block should sit flush over the exterior sheathing on the outside and the interior drywall on the inside.
That airflow is intended to churn the stale air in.
It can be cut to fit most joist spaces and is an affordable way to meet energy code requirements for air flow.
Baffles are a critical component to our attic insulation process that provides multiple benefits to a difficult construction aspect.
Surprisingly even the most well insulated attic space may still require the assistance of attic baffles to provide the additional air circulation.
For improved air circulation in the attic install the durovent 22 in.
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.
Baffles provide a channel for air to flow through certain parts of the attic.
The beauty of attic baffles is that they are available from most home improvement stores and can be installed simply with a few staples if you want the diy approach.