Roof Ait Flow Baffle

They are usually made from cardboard or rigid foam board or polyvinyl chloride.

Roof ait flow baffle.

The baffles make sure that the blown in insulation stays put so there s no wind washing. When set into place and sealed with spray foam the vent baffles are insulated and air sealed. In brief baffles are designed to provide a channel of air to flow through specific parts of your attic. The attic insulation baffles that we ll be installing will make sure that there s adequate air flow from the soffit vents.

Baffles establish a channel for air to circulate between the insulation and the roof sheathing. 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. As with attic floor insulation moisture and heat removal are the reasons for creating proper air. They will also allow us to maximize our blown in insulation without worrying about obstructing the air flow.

The picture below courtesy of the epa indoor airplus program which we provide builder verification services for helps show how the system works. What are they why are they important. The rigid foam is cut to be 2 inches wider than the space between rafters then 1 inch of foam is scored and folded over on either side of the foam creating standoffs that hold the foam away from the roof sheathing providing a space for air to flow.