Attic Ventilation System

To lower attic temperatures and to remove excess moisture.

Attic ventilation system.

In the summer natural air flow in a well vented attic moves super heated air out of the attic protecting roof shingles and removing moisture. Insufficient ventilation can lead to moisture problems during the winter and decreased energy efficiency during the summer but too much ventilation can be just as bad if not worse. This means an equal amount of intake net free area through vents positioned in the soffit overhang or near the roof s lowest edge and exhaust net free area through vents installed at or near the peak of the roof. It is the recommendation of the ravc that the attic ventilation system always is balanced.

Mesh roll ridge vent in black nail gun version when installed as part of a properly balanced when installed as part of a properly balanced attic ventilation system gaf cobra exhaust vent is a shingle over exhaust vent installed at the roof ridge that helps exhaust excess heat and moisture from your attic. Roofing and attic ventilation systems are designed to work year round to balance the intake of cool air and the outflow of warm air in the home. The insulation will resist heat transfer into the house. Most building codes require a ratio of 1 150 ventilation space to attic floor space.

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. Just like properly sizing your furnace and air conditioning unit you want precisely the right amount of attic ventilation for your home. Proper insulation and air sealing also keeps attics cold in winter by blocking the entry of heat and moist air from below. Ventilation of attic spaces is required by most building codes as well as by roofing material manufacturers and the national roofing contractors association nrca.

Attic ventilation serves two main functions. See the benefits of attic ventilation get automatic lifetime protection on your entire gaf roofing system when you install any gaf lifetime shingle and at least 3 qualifying gaf accessories you ll automatically get a lifetime limited warranty on your shingles and all qualifying gaf accessories. It comes on an easy to install flexible mesh roll and is hand nailable with no complicated fitting wrapping nail gun adapters. In summer and warmer months outside temperatures intensify the effects of this heated air.

Intake vents located at the lowest part of the roof under the eaves allow cool. It comes on an easy to install flexible mesh. Cobra exhaust vent 10 5 in. Attic ventilation works on the principle that heated air naturally rises primarily utilizing two types of vents.