Insulation Baffles Installation Manual
The number of attic baffles you need depends on your roof's size and shape and how many soffits you have. For every attic vent, the space between your rafters that covers each vent should be covered. See how many baffles need to cover each of those spaces and multiply that by how many total spaces there are. More baffles create more airflow, but you can always start with less and add more later.
Baffles for roof and attic insulation can also be used to prevent insulation from entering walls. This is great for homeowners who want a reliable insulation system that doesn't allow insulation to get into walls, floors, or other places. Attic insulation baffles are insulation devices that are placed in roof spaces and attics to prevent insulation from falling.
Insulation Baffles Made of Cardboard: Insulation baffles made from cardboard channel heat and cold air to roof vents. They prevent insulation blockage in the soffit. Cardboard attic baffles consist of corrugated cardboard that is folded and stapled to form a sturdy structure. However, they can be fragile and easily degrade.