Foam Insulation Baffles Required
Baffles are devices which restrict the flow, such as gas, fluid, and air. Attic Air claims that baffles promote airflow and keep vents clear of insulation. They can be made of either rigid waterproof foam or PVC- or plastic-coated and come in a variety of lengths. They are placed between the rafters and attic ceilings at the points where the attic floor meets your attic ceiling.
Experts recommend baffled rafter venting when an attic is used as a living space, or when other roof vents (such as open-walled gable vents) are not doing their job in retaining heat. Baffles are designed to create small gaps between roof peaks and soffit vents that allow fresh air to flow through them. The homeowners can stay more comfortably warm or cool by using these baffles, without needing to do extensive roof repairs.
Baffles create a barrier between the unconditioned and conditioned areas, which stops insulation from entering unwanted spaces like walls or exteriors. Baffles allow airflow to continue, while still maintaining an insulated space. If your intake vents become blocked, you can reduce the amount of fresh air required to ventilate your attic properly. This can cause heat buildup and moisture buildup in winter. It may seem counterintuitive but you don't want heat to buildup in your attic during winter. Ice dams can form in hot attics, which can prove to be extremely destructive.