How Many Baffles Do I Need In My Attic

I have fiberglass batts in the attic and will also be installing a radiant barrier under the roof.

How many baffles do i need in my attic.

You ll need installation equipment. Without baffles you must keep vents clear of insulation which means. The book that helped us build and renovate. Attic baffles how they work.

The first step in determining how many rafter vents your home needs is to determine your home s vent space in square feet. You will need a staple gun great stuff or a foam sealant gun a pile of attic baffles ok one per eave two if you re adding a lot of insulation 2 foam blocks per eave rough cut to fit approx 6 x 14 depending on the framing. Multiply those two numbers and then divide by 150 to get the vent space square footage. Installing baffles from a soffit vent and up the rafter bay allows you to insulate every available inch of attic floor space.

Moreover they provide clear and efficient air circulation which will keep your attic moisture and mildew free. Divide that number by 2 to determine how many vents you. The picture below courtesy of the epa indoor airplus program which we provide builder verification services for helps show how the system works. An attic s intake vents are most commonly installed directly in the soffit either as individual vents spaced every few feet or as one continuous perforated soffit running the.

My question is do i need baffles or should i just make sure there is a small gap over the soffit vents and if so should the baffles be positioned below or above the radiant barrier. 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.