Attic Ventilation Installation

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.

Attic ventilation installation.

Hot air exhaust vents located at the peak of the roof allow hot air to escape. 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. Next bore a 3 4 or 1 in dia. 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. That said air resistance and interference such as vent grates reduces the area of true ventilation. A licensed electrician can ensure that all aspects of your project will be completed correctly. 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.

Attic ventilation works on the principle that heated air naturally rises primarily utilizing two types of vents. Required materials for this roof vent installation project attic insulation baffles roof cement roof vents roofing nails sheet metal screws soffit vents. There are many factors that influence the overall cost of installing a home ventilation system and most are based on the system type. Start by using a chalk reel to snap two parallel lines down the center of the soffit.

In other words the entire vent opening doesn t count as vented space. 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. Hole through the soffit right between the lines and measure the. Most building codes require a ratio of 1 150 ventilation space to attic floor space.

You also want a fan that s appropriate for the square footage of your attic space by checking the manufacturer s specifications. Ventilation of attic spaces is required by most building codes as well as by roofing material manufacturers and the national roofing contractors association nrca. How to install soffit vents make two parallel lines. Ventilation systems can be installed by handymen roofers and ventilation manufacturer installation professionals.