Do You Put Attic Baffles Between Every Rafter Beams

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.

Do you put attic baffles between every rafter beams. So the buyer does want. 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. 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. 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.

Unfortunately when you start tapering off the insulation you quickly end up going from a r56 above to r0 below. Even with a 3 12 2 4 truss you are looking at a minimum r15 at the farthest edge. 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. By installing the baffles properly you can increase the r value all the way out to the exterior sheathing.

Do i need the soffet insulation vent installed between every joist rafter or just where the soffet vents are. Stack exchange network stack exchange network consists of 176 q a communities including stack overflow the largest most trusted online community for developers to learn share their knowledge. Installing baffles from a soffit vent and up the rafter bay allows you to insulate every available inch of attic floor space. Without baffles you must keep vents clear of insulation which means.

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. I am getting ready to blow insulation into my attic. Putting baffles in your attic is a crucial step in installing attic insulation. Login with facebook log in.

Sometimes called rafter vents baffles provide ventilation and keep the insulation from blocking airflow through your attic.