How To Install Attic Air Baffles

If your roof rafters have been covered over with drywall or plywood you will have to remove it in order to install the baffles.

How to install attic air baffles.

Install attic baffles if the attic doesn t have attic baffles let s install them. Locate the soffit vents in the eaves of your home. Pull any existing insulation away from the edges of the attic where you will be putting up the baffles. To completely cover your attic floor with insulation out to the eaves you need to install rafter vents also called insulation baffles.

You will need a baffle for each space between the rafters. Staple the tabs of the baffle to the rafters and the wall plate spacing staples approximately 4 inches. 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. Even with a 3 12 2 4 truss you are looking at a minimum r15 at the farthest edge.

Installing baffles in a attic where the insulation has already been installed. These specialty vents do not affect the. Complete coverage of the attic floor along with sealing air leaks will ensure you get the best performance from your insulation. Slide a baffle so it extends from the wall plate to the roof with the soffit vent behind it.

As listed in the definition above the baffle is meant to regulate the flow of air. Measure the distance between your rafters and purchase enough rafter vent baffles to install one over each. The outside edge of the baffle should be parallel to the exterior wall sheathing. Staple each side to the roof deck spaced about every 4 inches.

You ll need to crawl to the end of the eave and staple the baffle against the roof deck. Step 2 in the bay. By installing the baffles properly you can increase the r value all the way out to the exterior sheathing.