Air Baffle Attic Insulation

An attic baffle is simply an item to regulate the flow of air aka required roof venting and impede it the insulation from interfering with each other.

Air baffle attic insulation.

How to install attic rafter vents and baffles. Gaps in the attic or between the lower floors and the attic will let heated or cooled air escape to the great unconditioned outdoors making any insulation you add essentially useless. Sometimes called rafter vents baffles provide ventilation and keep the insulation from blocking airflow through your attic. Baffles are a critical component to our attic insulation process that provides multiple benefits to a difficult construction aspect.

Without an attic baffle there will not be any air space for fresh air to enter the attic from the soffit vents. Without this air movement any moisture that gets into. Basic functions of baffles baffles are chutes that when installed properly can provide a channel for air to flow from your exterior soffit vents up into your attic space. You can situate the baffles where the circulation is mainly required.

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. Cathedral vaulted or any ceiling that has insulation blocking the airflow from the soffit vents to the attic needs an attic baffle in each rafter bay. That airflow is intended to churn the stale air in. The gable of your house must have openings to allow fresh air to enter and stale air to exit.

Surprisingly even the most well insulated attic space may still require the assistance of attic baffles to provide the additional air circulation. The main function of an attic baffle is to draw the air in from outside your home and allowing it to circulate around your attic. Without fresh air from the soffit vents your roof top vents such as. Putting baffles in your attic is a crucial step in installing attic insulation.

The number one prep step. Find a diagram of common air leaks here here s a quick primer on fixing draft prone spots. As with attic floor insulation moisture and heat removal are the reasons for creating proper air movement. Run baffles the entire length of the rafter bay from the soffit vent to the ridge vent.

Use it between rafters to create an air channel through insulation to help keep air flowing freely in your attic. For improved air circulation in the attic install the durovent 22 in. It can be cut to fit most joist spaces and is an affordable way to meet energy code requirements for air flow. The picture below courtesy of the epa indoor airplus program which we provide builder verification services for helps show how the system works.