They are known are also known as wind baffle insulation baffles rafter vents or venting chutes.
Roof foam baffles home depot.
These insulation baffles are strong enough to support spray foam expanding insulation creating the required air chute most shingle manufacturers require for shingle warranties.
After installed the smartbaffle is 14 wide with 2 flanges.
Simply installing raft r mate attic rafter vents offers year round performance and helps to prevent ice dams in winter.
Here is what i did to achieve an r 30 value with 2x6 s.
Here is a video from our vendor durovent that will explain all about baffles.
Use it between rafters to create an air channel through insulation to help keep air flowing freely in your attic.
The beauty of attic baffles is that they are available from most home improvement stores and can be installed simply with a few staples if you want the diy approach.
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.
You will never locate them through the foam board you end up with r 31 when done.
Ado products durovent 23 1 2 in.
When baffles are properly placed you are able to have insulation right up against the baffle without blocking the air flow thus increasing your insulating coverage.
Attic ventilation system with built in baffle 10 carton install between rafters to provide an air channel through insulation to help keep air flowing freely.
Mark all your rafter centers for attaching drywall later.
Use batts of r 21 unfaced insulation then apply r 10 2 rigid foam board insulation over that.
Attic baffles are necessary for proper air flow from the soffit to the peak of the roof.
Attach drywall with 3 screws.
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.
Each piece can be very easily cut in half using a standard utility knife.
When insulating your attic it is important that you have unrestricted flow of fresh air from the soffit to the attic.
For improved air circulation in the attic install the durovent 22 inch x 48 inch rafter vent 10 pack.
It can be cut to fit most joist spaces and is an affordable way to meet energy code requirements for air flow.