Do You Put Attic Baffles Between Every Rafter Beams

By installing a baffle in every rafter bay you are able to keep the insulation from coming into contact with the underside of the decking without the potential for air to eddy in a narrow unvented gap between the insulation and decking without a baffle.

Do you put attic baffles between every rafter beams.

Even with a 3 12 2 4 truss you are looking at a minimum r15 at the farthest edge. Baffles needed in every rafter bay. Sometimes called rafter vents baffles provide ventilation and keep the insulation from blocking airflow through your attic. Putting baffles in your attic is a crucial step in installing attic insulation.

When bob kelly of kensington nh had to insulate a cathedral ceiling he came up with a clever way of using rigid foam as his vent baffle so. Attach this roof and attic insulation treatment using foam baffles to ventilate insulate and channel cold and hot air to roof vents before insulation is add. I am getting ready to blow insulation into my attic. Do i need the soffet insulation vent installed between every joist rafter or just where the soffet vents are.

If you re insulating a cathedral ceiling and need to maintain an air sealed vent space from the soffit all the way to the ridge you could use plastic baffles stapled into place between the rafters and try to air seal them but there s a better way. Installing baffles from a soffit vent and up the rafter bay allows you to insulate every available inch of attic floor space. I blew it in all the walls and between the floor joists in the attic under the floor. Depending on the size of the opening set a half sheet of 3 4 inch plywood across the rafters to stand on while you maneuver to the soffit vent openings in the attic.

What happens if the attic vents or rafter baffles don t cover the entire opening between the rafters and one or two inches of wood is left exposed. By installing the baffles properly you can increase the r value all the way out to the exterior sheathing. So the buyer does want. It is a fairly easy process that will make a world of difference in assisting your insulation and keeping your home protected from rot which can save you a substantial amount of money down.

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