Correct Attic Ventilation

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.

Correct attic ventilation.

Attic ventilation serves two main functions. Attic ventilation works on the principle that heated air naturally rises primarily utilizing two types of vents. Hot air exhaust vents located at the peak of the roof allow hot air to escape. 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. 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. Ventilation of attic spaces is required by most building codes as well as by roofing material manufacturers and the national roofing contractors association nrca. Intake vents located at the lowest part of the roof under the eaves allow cool air to enter the attic.

Attic fans are intended to cool hot attics by drawing in cooler outside air from attic vents.