Correct Attic Ventilation

Attic ventilation works on the principle that heated air naturally rises primarily utilizing two types of vents.

Correct attic ventilation.

Attic fans are intended to cool hot attics by drawing in cooler outside air from attic vents. Installing continuous soffit vents along the outer edge of the eaves adding a ridge vent insulating along the top plates to meet or exceed the r value already in the walls sealing the attic floor to make it airtight and making sure there s the recommended r value of properly installed. Lowering the temperature in the attic can help reduce air conditioning energy costs and roof deck temperature optimize the service life of a roof covering and minimize ice damming. You can also contact your local municipality to check on building code in your area.

At first it may seem odd to add insulation for warmth and then purposely allow cold air to. 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. Intake vents located at the lowest part of the roof under the eaves allow cool air to enter the attic.

Attic ventilation serves two main functions.