Attic Baffles Requirements

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.

Attic baffles requirements.

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. A 50 x 30 attic would have a total area of 1 500 sq. For batts or rolls calculate the number based on the width and length of the product you re using. Length x width of attic in feet 150 total sq.

Each bag lists the required depths for a range of r values and the number of bags needed to cover 1 000 square feet at those depths. Attic baffles how they work. Multiply the length of the attic times the width in feet to find the attic area then divide by 150 to find the total square feet of vent space needed. For loose fill read labels.

Ft divided by 150 equals 10 sq. Calculate the total vent area needed. Of total vent space needed. Baffles are a critical component to our attic insulation process that provides multiple benefits to a difficult construction aspect.

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. That means drawing air in from outside the home and allowing it to push through the attic. Pull any existing insulation away from the edges of the attic where you will be putting up the baffles. Ado products durovent 23 1 2 in.

Fit each one snuggly in the bay with the bottom starting where the ceiling joist meets the roof rafter. Attic ventilation works on the principle that heated air naturally rises primarily utilizing two types of vents. You will need a baffle for each space between the rafters. The picture below courtesy of the epa indoor airplus program which we provide builder verification services for helps show how the system works.

Surprisingly even the most well insulated attic space may still require the assistance of attic baffles to provide the additional air circulation. Measure your attic s square footage. That airflow is intended to churn the stale air in. Attic ventilation system with built in baffle 10 per carton 4 4 out of 5 stars 3 accuvent 14 5 x 50 16 o c flame retardant pvc high energy vent 50 pack acbp18429.