One of the easiest ways to ensure proper eave ventilation is by using prefabricated soffit insulation baffles. The soffit insulation baffle shown here is made by Berger and is called AccuVent™. This product is available in big box home improvement centers and is made of rigid recycled plastic. Other types of prefabricated baffles are made with foam and are less durable. Since the AccuVent product is made of plastic it also installs easily with a staple gun.
Baffles like this allow you to quickly ensure the soffit / eave ventilation area is unobstructed and an air pathway from the eave vent is continuous into the attic cavity. This way you can blow insulation into the roof or lay batt insulation without having to worry about the insulation getting into the soffit and blocking the soffit eave vent. These prefab baffles adjust to fit any roof pitch and will not absorb moisture helping to prevent the growth of mold.
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