Attic Ventilation Installation

In other words the entire vent opening doesn t count as vented space.

Attic ventilation installation.

This way you don t have to cut a brand new hole but simply make the hole for the vent larger so it can accommodate the fan. Start by using a chalk reel to snap two parallel lines down the center of the soffit. That said air resistance and interference such as vent grates reduces the area of true ventilation. Connect the two cuts.

Hole through the soffit right between the lines and measure the. You also want a fan that s appropriate for the square footage of your attic space by checking the manufacturer s specifications. Next bore a 3 4 or 1 in dia. How to install soffit vents make two parallel lines.

Intake vents located at the lowest part of the roof under the eaves allow cool air to enter the attic. There are many factors that influence the overall cost of installing a home ventilation system and most are based on the system type. A licensed electrician can ensure that all aspects of your project will be completed correctly. A drip edge vent is made of a corrosive resistant material that sticks out about three inches back from the roof edge and then bends downward over them.

Generally speaking you need a ratio of 1 300 where for every 300 square feet of ceiling space you need 1 square foot of attic ventilation. You can also contact your local municipality to check on building code in your area. To save time use an existing roof or gable vent to install your new attic fan. Ventilation systems can be installed by handymen roofers and ventilation manufacturer installation professionals.

Ventilation of attic spaces is required by most building codes as well as by roofing material manufacturers and the national roofing contractors association nrca. Drip edge vents are a two in one installation that promote water shedding at the eaves and rakes of a roof while also allowing for ventilation into the attic. Most building codes require a ratio of 1 150 ventilation space to attic floor space. Hot air exhaust vents located at the peak of the roof allow hot air to escape.